This question tests CCSS.L.4.4.c: consulting reference materials (dictionaries, glossaries, thesauruses) to find pronunciation and determine or clarify precise meaning. Students must know which tool to use for different purposes and how to use information from these references. Three main reference tools: (1) DICTIONARY - use to find word meanings (definitions), pronunciation (how to say it), spelling, part of speech (noun/verb/etc.), and multiple definitions if word has more than one meaning. Dictionary entries show: entry word in bold, pronunciation in parentheses, part of speech abbreviated, definition(s) numbered if multiple, and example sentences. (2) GLOSSARY - found at back of textbooks, defines subject-specific or difficult words used in that book; faster than dictionary because only includes book's vocabulary. (3) THESAURUS - use to find synonyms (words with similar meanings) when you want to avoid repeating same word or need more precise/interesting word. Thesaurus doesn't define words - it gives alternatives. In this question, Carlos sees a dictionary entry with 'photograph (FOH-toh-graf)' and needs to identify what the part in parentheses is for. The purpose is understanding the components of a dictionary entry, specifically the pronunciation guide. Choice A is correct because in dictionary entries, the pronunciation is shown in parentheses right after the entry word, using respelling and symbols to guide how to say it, like breaking 'photograph' into syllables. Choice B represents misreading the entry, which occurs when students confuse pronunciation guides with synonyms (synonyms are in thesauruses, not the parentheses in dictionaries). To help students: Create reference tool decision chart. NEED MEANING? → Check GLOSSARY first if reading textbook (faster, subject-specific), OR use DICTIONARY (complete definitions, all meanings). NEED PRONUNCIATION? → Use DICTIONARY (shows how to say it with pronunciation guide in parentheses). NEED SYNONYM? → Use THESAURUS (lists similar words). NEED SPELLING? → Use DICTIONARY. NEED OPPOSITE WORD? → Use THESAURUS (often lists antonyms). Teach how to read dictionary entries: Entry word (bold) → Pronunciation (parentheses) → Part of speech (n., v., adj.) → Definition (numbered if multiple) → Example sentence. Teach when to use glossary: Reading science/social studies textbook, see unfamiliar term, check glossary at back of book first (definitions match book content). Teach thesaurus use: Writing and used word too many times, look up word in thesaurus, find synonym that fits context, check if it has same part of speech. Practice with real entries. Watch for: confusing dictionary and thesaurus (dictionary defines, thesaurus gives synonyms), ignoring glossaries (faster than dictionary for textbook terms), not using pronunciation guides (parentheses show how to say word), not reading all definitions when word has multiple meanings (must use context to choose correct one), over-using references for words that can be determined from context clues. Teach when reference needed: unfamiliar word, can't determine from context, need precise meaning, want synonym, unsure of pronunciation. Emphasize that glossaries are your friend when reading textbooks - faster and more relevant than full dictionary.

This question tests CCSS.L.4.4.c: consulting reference materials (dictionaries, glossaries, thesauruses) to find pronunciation and determine or clarify precise meaning. Students must know which tool to use for different purposes and how to use information from these references. Three main reference tools: (1) DICTIONARY - use to find word meanings (definitions), pronunciation (how to say it), spelling, part of speech (noun/verb/etc.), and multiple definitions if word has more than one meaning. Dictionary entries show: entry word in bold, pronunciation in parentheses, part of speech abbreviated, definition(s) numbered if multiple, and example sentences. (2) GLOSSARY - found at back of textbooks, defines subject-specific or difficult words used in that book; faster than dictionary because only includes book's vocabulary. (3) THESAURUS - use to find synonyms (words with similar meanings) when you want to avoid repeating same word or need more precise/interesting word. In this scenario, Maya encounters the word 'ancient' in a story and needs to find its meaning. The purpose is learning the definition of an unfamiliar word encountered while reading. Choice C (Dictionary) is correct because a dictionary is the primary tool for finding word meanings and definitions. When you encounter an unfamiliar word in general reading (not a textbook), the dictionary provides complete definitions, often with multiple meanings if applicable. For 'ancient,' the dictionary would show it means 'very old' or 'from long ago,' along with pronunciation (AYN-shunt) and that it's an adjective. Choice B (Glossary) represents a common error where students might think any definition-finding requires a glossary, which occurs when students don't realize glossaries are specific to textbooks and won't contain general vocabulary words from stories. A glossary only includes specialized terms from that particular book, so a story wouldn't have a glossary with common words like 'ancient.' To help students: Create reference tool decision chart. NEED MEANING? → Check GLOSSARY first if reading textbook (faster, subject-specific), OR use DICTIONARY (complete definitions, all meanings). NEED PRONUNCIATION? → Use DICTIONARY (shows how to say it with pronunciation guide in parentheses). NEED SYNONYM? → Use THESAURUS (lists similar words). Practice scenarios: 'Where would you look if...' Watch for: assuming glossaries contain all words (they don't - only textbook terms), not recognizing when dictionary is needed for general vocabulary, confusing thesaurus function (gives synonyms, not definitions).

This question tests CCSS.L.4.4.c: consulting reference materials (dictionaries, glossaries, thesauruses) to find pronunciation and determine or clarify precise meaning. Students must know which tool to use for different purposes and how to use information from these references. Three main reference tools: (1) DICTIONARY - use to find word meanings (definitions), pronunciation (how to say it), spelling, part of speech (noun/verb/etc.), and multiple definitions if word has more than one meaning. Dictionary entries show: entry word in bold, pronunciation in parentheses, part of speech abbreviated, definition(s) numbered if multiple, and example sentences. (2) GLOSSARY - found at back of textbooks, defines subject-specific or difficult words used in that book; faster than dictionary because only includes book's vocabulary. (3) THESAURUS - use to find synonyms (words with similar meanings) when you want to avoid repeating same word or need more precise/interesting word. In this scenario, Sofia encounters the word 'habitat' in her science book and needs a quick definition while reading. The purpose is finding the meaning of a subject-specific term in a textbook efficiently. Choice C (Glossary) is correct because the glossary at the back of a science textbook is the fastest way to find definitions of scientific terms used in that book. Glossaries are designed specifically for the textbook's content - the definition of 'habitat' in the science book's glossary will match exactly how the term is used in that chapter, making it quicker and more relevant than looking in a general dictionary. The glossary entry might read: 'habitat - the natural home or environment of an animal, plant, or organism.' Choice A (Dictionary) represents not recognizing the efficiency of glossaries, which occurs when students don't realize that textbooks include glossaries specifically to help with subject vocabulary. While a dictionary would work, it's slower and might give multiple definitions that don't match the specific scientific context. To help students: Create reference tool decision chart. NEED MEANING? → Check GLOSSARY first if reading textbook (faster, subject-specific), OR use DICTIONARY (complete definitions, all meanings). Teach glossary use: When reading science/social studies textbook and see unfamiliar term, flip to back of book first - glossary definitions are tailored to how words are used in that specific book. Practice finding words in both glossary and dictionary to see the difference in speed and relevance. Watch for: ignoring glossaries (students often forget they exist), going straight to dictionary when glossary is faster, not understanding that glossary definitions match textbook usage. Emphasize that glossaries are your friend when reading textbooks - they're like a mini-dictionary designed just for that book's vocabulary, making them the quickest path to understanding subject-specific terms.

This question tests CCSS.L.4.4.c: consulting reference materials (dictionaries, glossaries, thesauruses) to find pronunciation and determine or clarify precise meaning. Students must know which tool to use for different purposes and how to use information from these references. Three main reference tools: (1) DICTIONARY - use to find word meanings (definitions), pronunciation (how to say it), spelling, part of speech (noun/verb/etc.), and multiple definitions if word has more than one meaning. Dictionary entries show: entry word in bold, pronunciation in parentheses, part of speech abbreviated, definition(s) numbered if multiple, and example sentences. (2) GLOSSARY - found at back of textbooks, defines subject-specific or difficult words used in that book; faster than dictionary because only includes book's vocabulary. (3) THESAURUS - use to find synonyms (words with similar meanings) when you want to avoid repeating same word or need more precise/interesting word. Thesaurus doesn't define words - it gives alternatives. In this question, Marcus encounters 'immigrant' in his social studies textbook and needs a quick definition specific to the book. The purpose is getting a fast, book-relevant meaning for a subject-specific term. Choice A is correct because a GLOSSARY provides quick definitions of terms used in the book, such as 'immigrant: a person who comes to live permanently in a foreign country,' tailored to social studies context. Glossaries are quicker than dictionaries for textbook terms and definitions match how the word is used in that book. Choice C represents wrong tool for purpose, which occurs when students don't realize glossaries are faster and more focused than dictionaries for textbook terms. While a dictionary gives a general definition, the glossary is designed for quick lookup in the context of the book. To help students: Create reference tool decision chart. NEED MEANING? → Check GLOSSARY first if reading textbook (faster, subject-specific), OR use DICTIONARY (complete definitions, all meanings). NEED PRONUNCIATION? → Use DICTIONARY (shows how to say it with pronunciation guide in parentheses). NEED SYNONYM? → Use THESAURUS (lists similar words). NEED SPELLING? → Use DICTIONARY. NEED OPPOSITE WORD? → Use THESAURUS (often lists antonyms). Teach how to read dictionary entries: Entry word (bold) → Pronunciation (parentheses) → Part of speech (n., v., adj.) → Definition (numbered if multiple) → Example sentence. Teach when to use glossary: Reading science/social studies textbook, see unfamiliar term, check glossary at back of book first (definitions match book content). Teach thesaurus use: Writing and used word too many times, look up word in thesaurus, find synonym that fits context, check if it has same part of speech. Practice with real entries. Watch for: confusing dictionary and thesaurus (dictionary defines, thesaurus gives synonyms), ignoring glossaries (faster than dictionary for textbook terms), not using pronunciation guides (parentheses show how to say word), not reading all definitions when word has multiple meanings (must use context to choose correct one), over-using references for words that can be determined from context clues. Teach when reference needed: unfamiliar word, can't determine from context, need precise meaning, want synonym, unsure of pronunciation. Emphasize that glossaries are your friend when reading textbooks - faster and more relevant than full dictionary.

This question tests CCSS.L.4.4.c: consulting reference materials (dictionaries, glossaries, thesauruses) to find pronunciation and determine or clarify precise meaning. Students must know which tool to use for different purposes and how to use information from these references. Three main reference tools: (1) DICTIONARY - use to find word meanings (definitions), pronunciation (how to say it), spelling, part of speech (noun/verb/etc.), and multiple definitions if word has more than one meaning. Dictionary entries show: entry word in bold, pronunciation in parentheses, part of speech abbreviated, definition(s) numbered if multiple, and example sentences. (2) GLOSSARY - found at back of textbooks, defines subject-specific or difficult words used in that book; faster than dictionary because only includes book's vocabulary. (3) THESAURUS - use to find synonyms (words with similar meanings) when you want to avoid repeating same word or need more precise/interesting word. Thesaurus doesn't define words - it gives alternatives. In this question, Sofia encounters an unfamiliar word 'habitat' in her science textbook and needs its meaning. The purpose is learning the meaning of a subject-specific term quickly. Choice B is correct because the GLOSSARY at the back of the science textbook is the fastest way to find definitions of subject-specific terms used in that book, such as 'habitat: the natural home or environment of an animal or plant.' Glossaries are quicker than dictionaries for textbook terms and definitions match how the word is used in that book. Choice C represents ignoring context, which occurs when students don't realize glossaries are faster and more focused than dictionaries for textbook terms. While a dictionary would work and provide a general definition, the glossary gives the precise meaning as used in the science book. To help students: Create reference tool decision chart. NEED MEANING? → Check GLOSSARY first if reading textbook (faster, subject-specific), OR use DICTIONARY (complete definitions, all meanings). NEED PRONUNCIATION? → Use DICTIONARY (shows how to say it with pronunciation guide in parentheses). NEED SYNONYM? → Use THESAURUS (lists similar words). NEED SPELLING? → Use DICTIONARY. NEED OPPOSITE WORD? → Use THESAURUS (often lists antonyms). Teach how to read dictionary entries: Entry word (bold) → Pronunciation (parentheses) → Part of speech (n., v., adj.) → Definition (numbered if multiple) → Example sentence. Teach when to use glossary: Reading science/social studies textbook, see unfamiliar term, check glossary at back of book first (definitions match book content). Teach thesaurus use: Writing and used word too many times, look up word in thesaurus, find synonym that fits context, check if it has same part of speech. Practice with real entries. Watch for: confusing dictionary and thesaurus (dictionary defines, thesaurus gives synonyms), ignoring glossaries (faster than dictionary for textbook terms), not using pronunciation guides (parentheses show how to say word), not reading all definitions when word has multiple meanings (must use context to choose correct one), over-using references for words that can be determined from context clues. Teach when reference needed: unfamiliar word, can't determine from context, need precise meaning, want synonym, unsure of pronunciation. Emphasize that glossaries are your friend when reading textbooks - faster and more relevant than full dictionary.

This question tests CCSS.L.4.4.c: consulting reference materials (dictionaries, glossaries, thesauruses) to find pronunciation and determine or clarify precise meaning. Students must know which tool to use for different purposes and how to use information from these references. Three main reference tools: (1) DICTIONARY - use to find word meanings (definitions), pronunciation (how to say it), spelling, part of speech (noun/verb/etc.), and multiple definitions if word has more than one meaning. Dictionary entries show: entry word in bold, pronunciation in parentheses, part of speech abbreviated, definition(s) numbered if multiple, and example sentences. (2) GLOSSARY - found at back of textbooks, defines subject-specific or difficult words used in that book; faster than dictionary because only includes book's vocabulary. (3) THESAURUS - use to find synonyms (words with similar meanings) when you want to avoid repeating same word or need more precise/interesting word. Thesaurus doesn't define words - it gives alternatives. In this question, Maya encounters an unfamiliar word 'ancient' in her book and needs to determine its meaning. The purpose is learning the definition of a general word not specified as subject-specific. Choice C is correct because a DICTIONARY provides complete definitions, including meanings for words like 'ancient' (very old; from long ago), along with part of speech and examples. For instance, a dictionary entry might show: ancient (AYN-shuhnt) adj.: belonging to times long past. Choice B represents confusing tool functions, which occurs when students don't realize glossaries are for textbook-specific terms and faster for that context, but here the book isn't specified as a textbook with a glossary, so a dictionary is the go-to tool for general meanings. While a glossary could work if available, a dictionary is more comprehensive for any word. To help students: Create reference tool decision chart. NEED MEANING? → Check GLOSSARY first if reading textbook (faster, subject-specific), OR use DICTIONARY (complete definitions, all meanings). NEED PRONUNCIATION? → Use DICTIONARY (shows how to say it with pronunciation guide in parentheses). NEED SYNONYM? → Use THESAURUS (lists similar words). NEED SPELLING? → Use DICTIONARY. NEED OPPOSITE WORD? → Use THESAURUS (often lists antonyms). Teach how to read dictionary entries: Entry word (bold) → Pronunciation (parentheses) → Part of speech (n., v., adj.) → Definition (numbered if multiple) → Example sentence. Teach when to use glossary: Reading science/social studies textbook, see unfamiliar term, check glossary at back of book first (definitions match book content). Teach thesaurus use: Writing and used word too many times, look up word in thesaurus, find synonym that fits context, check if it has same part of speech. Practice with real entries. Watch for: confusing dictionary and thesaurus (dictionary defines, thesaurus gives synonyms), ignoring glossaries (faster than dictionary for textbook terms), not using pronunciation guides (parentheses show how to say word), not reading all definitions when word has multiple meanings (must use context to choose correct one), over-using references for words that can be determined from context clues. Teach when reference needed: unfamiliar word, can't determine from context, need precise meaning, want synonym, unsure of pronunciation. Emphasize that glossaries are your friend when reading textbooks - faster and more relevant than full dictionary.

This question tests CCSS.L.4.4.c: consulting reference materials (dictionaries, glossaries, thesauruses) to find pronunciation and determine or clarify precise meaning. Students must know which tool to use for different purposes and how to use information from these references. Three main reference tools: (1) DICTIONARY - use to find word meanings (definitions), pronunciation (how to say it), spelling, part of speech (noun/verb/etc.), and multiple definitions if word has more than one meaning. Dictionary entries show: entry word in bold, pronunciation in parentheses, part of speech abbreviated, definition(s) numbered if multiple, and example sentences. (2) GLOSSARY - found at back of textbooks, defines subject-specific or difficult words used in that book; faster than dictionary because only includes book's vocabulary. (3) THESAURUS - use to find synonyms (words with similar meanings) when you want to avoid repeating same word or need more precise/interesting word. Thesaurus doesn't define words - it gives alternatives. In this question, Amir is unsure of the spelling of 'separate' and needs a tool to check it. The purpose is verifying or finding the correct spelling of a word. Choice C is correct because a DICTIONARY lists words in alphabetical order with correct spellings as entry words, such as 'separate (SEP-uh-rayt) v.: to divide or keep apart.' Dictionaries are the primary tool for spelling confirmation. Choice A represents wrong tool for purpose, which occurs when students confuse tool functions - thesaurus gives synonyms but doesn't focus on spelling. A thesaurus might list 'divide, detach' under separate but assumes you know the spelling already. To help students: Create reference tool decision chart. NEED MEANING? → Check GLOSSARY first if reading textbook (faster, subject-specific), OR use DICTIONARY (complete definitions, all meanings). NEED PRONUNCIATION? → Use DICTIONARY (shows how to say it with pronunciation guide in parentheses). NEED SYNONYM? → Use THESAURUS (lists similar words). NEED SPELLING? → Use DICTIONARY. NEED OPPOSITE WORD? → Use THESAURUS (often lists antonyms). Teach how to read dictionary entries: Entry word (bold) → Pronunciation (parentheses) → Part of speech (n., v., adj.) → Definition (numbered if multiple) → Example sentence. Teach when to use glossary: Reading science/social studies textbook, see unfamiliar term, check glossary at back of book first (definitions match book content). Teach thesaurus use: Writing and used word too many times, look up word in thesaurus, find synonym that fits context, check if it has same part of speech. Practice with real entries. Watch for: confusing dictionary and thesaurus (dictionary defines, thesaurus gives synonyms), ignoring glossaries (faster than dictionary for textbook terms), not using pronunciation guides (parentheses show how to say word), not reading all definitions when word has multiple meanings (must use context to choose correct one), over-using references for words that can be determined from context clues. Teach when reference needed: unfamiliar word, can't determine from context, need precise meaning, want synonym, unsure of pronunciation. Emphasize that glossaries are your friend when reading textbooks - faster and more relevant than full dictionary.

This question tests CCSS.L.4.4.c: consulting reference materials (dictionaries, glossaries, thesauruses) to find pronunciation and determine or clarify precise meaning. Students must know which tool to use for different purposes and how to use information from these references. Three main reference tools: (1) DICTIONARY - use to find word meanings (definitions), pronunciation (how to say it), spelling, part of speech (noun/verb/etc.), and multiple definitions if word has more than one meaning. Dictionary entries show: entry word in bold, pronunciation in parentheses, part of speech abbreviated, definition(s) numbered if multiple, and example sentences. (2) GLOSSARY - found at back of textbooks, defines subject-specific or difficult words used in that book; faster than dictionary because only includes book's vocabulary. (3) THESAURUS - use to find synonyms (words with similar meanings) when you want to avoid repeating same word or need more precise/interesting word. Thesaurus doesn't define words - it gives alternatives. In this question, Chen reads a sentence with 'bank' in the context of 'river bank' and needs to select the fitting dictionary definition for a word with multiple meanings. The purpose is using context to clarify the precise meaning from multiple options. Choice B is correct because when a word has multiple meanings, the DICTIONARY shows all definitions and you use context to choose which one fits, here 'the edge of a river' matches 'river bank' rather than a financial institution. The context "river bank" indicates definition like (2) the sloping land beside a body of water, not (1) a place to keep money. Choice A represents ignoring context, which occurs when students don't use the sentence to select the correct definition when a word has multiple meanings. The context indicates the natural feature, not the money place - you must read the sentence to choose the right definition. To help students: Create reference tool decision chart. NEED MEANING? → Check GLOSSARY first if reading textbook (faster, subject-specific), OR use DICTIONARY (complete definitions, all meanings). NEED PRONUNCIATION? → Use DICTIONARY (shows how to say it with pronunciation guide in parentheses). NEED SYNONYM? → Use THESAURUS (lists similar words). NEED SPELLING? → Use DICTIONARY. NEED OPPOSITE WORD? → Use THESAURUS (often lists antonyms). Teach how to read dictionary entries: Entry word (bold) → Pronunciation (parentheses) → Part of speech (n., v., adj.) → Definition (numbered if multiple) → Example sentence. Teach when to use glossary: Reading science/social studies textbook, see unfamiliar term, check glossary at back of book first (definitions match book content). Teach thesaurus use: Writing and used word too many times, look up word in thesaurus, find synonym that fits context, check if it has same part of speech. Practice with real entries. Watch for: confusing dictionary and thesaurus (dictionary defines, thesaurus gives synonyms), ignoring glossaries (faster than dictionary for textbook terms), not using pronunciation guides (parentheses show how to say word), not reading all definitions when word has multiple meanings (must use context to choose correct one), over-using references for words that can be determined from context clues. Teach when reference needed: unfamiliar word, can't determine from context, need precise meaning, want synonym, unsure of pronunciation. Emphasize that glossaries are your friend when reading textbooks - faster and more relevant than full dictionary.

This question tests CCSS.L.4.4.c: consulting reference materials (dictionaries, glossaries, thesauruses) to find pronunciation and determine or clarify precise meaning. Students must know which tool to use for different purposes and how to use information from these references. Three main reference tools: (1) DICTIONARY - use to find word meanings (definitions), pronunciation (how to say it), spelling, part of speech (noun/verb/etc.), and multiple definitions if word has more than one meaning. Dictionary entries show: entry word in bold, pronunciation in parentheses, part of speech abbreviated, definition(s) numbered if multiple, and example sentences. (2) GLOSSARY - found at back of textbooks, defines subject-specific or difficult words used in that book; faster than dictionary because only includes book's vocabulary. (3) THESAURUS - use to find synonyms (words with similar meanings) when you want to avoid repeating same word or need more precise/interesting word. Thesaurus doesn't define words - it gives alternatives. In this question, Keisha wants another word for 'said' in her story to improve her writing. The purpose is finding a synonym to replace a repeated word. Choice B is correct because a THESAURUS is the tool for finding synonyms and alternative words, such as 'said → stated, mentioned, declared, exclaimed.' Thesauruses list synonyms to help vary language in writing. Choice C represents confusing tool functions, which occurs when students think thesaurus defines words (it doesn't - it just gives synonyms). A dictionary defines 'said' as past tense of say but primarily provides meaning, not lists of alternatives. To help students: Create reference tool decision chart. NEED MEANING? → Check GLOSSARY first if reading textbook (faster, subject-specific), OR use DICTIONARY (complete definitions, all meanings). NEED PRONUNCIATION? → Use DICTIONARY (shows how to say it with pronunciation guide in parentheses). NEED SYNONYM? → Use THESAURUS (lists similar words). NEED SPELLING? → Use DICTIONARY. NEED OPPOSITE WORD? → Use THESAURUS (often lists antonyms). Teach how to read dictionary entries: Entry word (bold) → Pronunciation (parentheses) → Part of speech (n., v., adj.) → Definition (numbered if multiple) → Example sentence. Teach when to use glossary: Reading science/social studies textbook, see unfamiliar term, check glossary at back of book first (definitions match book content). Teach thesaurus use: Writing and used word too many times, look up word in thesaurus, find synonym that fits context, check if it has same part of speech. Practice with real entries. Watch for: confusing dictionary and thesaurus (dictionary defines, thesaurus gives synonyms), ignoring glossaries (faster than dictionary for textbook terms), not using pronunciation guides (parentheses show how to say word), not reading all definitions when word has multiple meanings (must use context to choose correct one), over-using references for words that can be determined from context clues. Teach when reference needed: unfamiliar word, can't determine from context, need precise meaning, want synonym, unsure of pronunciation. Emphasize that glossaries are your friend when reading textbooks - faster and more relevant than full dictionary.

This question tests CCSS.L.4.4.c: consulting reference materials (dictionaries, glossaries, thesauruses) to find pronunciation and determine or clarify precise meaning. Students must know which tool to use for different purposes and how to use information from these references. Three main reference tools: (1) DICTIONARY - use to find word meanings (definitions), pronunciation (how to say it), spelling, part of speech (noun/verb/etc.), and multiple definitions if word has more than one meaning. Dictionary entries show: entry word in bold, pronunciation in parentheses, part of speech abbreviated, definition(s) numbered if multiple, and example sentences. (2) GLOSSARY - found at back of textbooks, defines subject-specific or difficult words used in that book; faster than dictionary because only includes book's vocabulary. (3) THESAURUS - use to find synonyms (words with similar meanings) when you want to avoid repeating same word or need more precise/interesting word. Thesaurus doesn't define words - it gives alternatives. In this question, Carlos has repeated the word 'happy' three times in his writing and needs a synonym to vary his language. The purpose is finding an alternative word to avoid repetition. Choice C is correct because a THESAURUS is the tool for finding synonyms and alternative words, which is what's needed to avoid repeating the same word. Thesauruses list synonyms: happy → joyful, glad, cheerful, delighted. Choice A represents wrong tool for purpose, which occurs when students confuse which tool does what - dictionary for meanings, thesaurus for synonyms. A dictionary defines 'happy' as feeling pleasure but doesn't primarily list synonyms like a thesaurus does. To help students: Create reference tool decision chart. NEED MEANING? → Check GLOSSARY first if reading textbook (faster, subject-specific), OR use DICTIONARY (complete definitions, all meanings). NEED PRONUNCIATION? → Use DICTIONARY (shows how to say it with pronunciation guide in parentheses). NEED SYNONYM? → Use THESAURUS (lists similar words). NEED SPELLING? → Use DICTIONARY. NEED OPPOSITE WORD? → Use THESAURUS (often lists antonyms). Teach how to read dictionary entries: Entry word (bold) → Pronunciation (parentheses) → Part of speech (n., v., adj.) → Definition (numbered if multiple) → Example sentence. Teach when to use glossary: Reading science/social studies textbook, see unfamiliar term, check glossary at back of book first (definitions match book content). Teach thesaurus use: Writing and used word too many times, look up word in thesaurus, find synonym that fits context, check if it has same part of speech. Practice with real entries. Watch for: confusing dictionary and thesaurus (dictionary defines, thesaurus gives synonyms), ignoring glossaries (faster than dictionary for textbook terms), not using pronunciation guides (parentheses show how to say word), not reading all definitions when word has multiple meanings (must use context to choose correct one), over-using references for words that can be determined from context clues. Teach when reference needed: unfamiliar word, can't determine from context, need precise meaning, want synonym, unsure of pronunciation. Emphasize that glossaries are your friend when reading textbooks - faster and more relevant than full dictionary.