Practice Test 11 - ACT English

20 questions. Answer them in any order, then submit to see your score and every explanation.

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1. A science blog post explains that some birds navigate using Earth's magnetic field. The author compares this ability to having an internal compass, though the mechanism is still being studied. Experiments suggest that certain proteins in birds' eyes may react to light in a way that helps them detect magnetic direction. The post also notes that artificial light can interfere with migration. Researchers are now testing whether shielding bright city lights could reduce disorientation during peak seasons, and help birds reach their destinations. Which choice makes the sentence most grammatically acceptable?
2. A short biography of the inventor Lewis Latimer notes that he drafted patents and improved electric lighting. In class, we focused on how his technical drawings helped other engineers reproduce complex designs. Latimer's work mattered because it combined precision with imagination and, because it made new technology easier to share. Which choice makes the sentence most grammatically acceptable?
3. The writer is considering replacing the underlined word 'vital' with the word 'various.' Would this substitution improve the sentence?
4. The writer is considering deleting the underlined portion. Should the writer do this?
5. In a documentary about early space missions, engineers described how many small decisions shaped each launch. A single loose bolt could delay a flight for weeks. The narrator emphasized the teams' patience and precision, qualities, that often went unnoticed by the public. Which choice makes the sentence most grammatically acceptable?
6. I believe its the best option available.
7. The teams strategy was to play aggressively.
8. By the time you read this, I will have left for the airport.
9. For the sake of logic and coherence, Sentence [3] should be placed: [1] The team was excited about their upcoming match. [2] They had been practicing hard all week. [3] The weather forecast predicted rain on the day of the match. [4] Their coach reminded them to stay focused.
10. For a documentary project, Lucía interviewed two local chefs, Chef Morgan and Chef Alvarez, about how they source ingredients. Both chefs described visiting farmers' markets early in the morning, and Lucía worried that her narration might blur their distinct perspectives. In her script she wrote that he emphasized building relationships with growers, even though both chefs were mentioned in the previous sentence. Which choice makes the sentence most grammatically acceptable?
11. After a long rehearsal, the stage crew stayed late to reset props for the next scene. The director thanked the crew and said the show was improving quickly. In the program notes, she wrote that the new lighting cues were the most brightest part of the production. Which choice makes the sentence most grammatically acceptable?
12. The number of applicants this year was significantly less than last year. Which word best fits the meaning of the sentence?
13. Which choice provides the most logical transition at this point in the passage?
14. The scientists experiment was groundbreaking.
15. The writer is considering deleting the underlined sentence. Should the writer do this?
16. A student writes this paragraph about citizen science projects that track birds: Birdwatchers contribute to science by recording sightings on apps and websites. When thousands of participants submit observations, researchers can map migration routes and see how timing changes from year to year. Because the data come from many skill levels, projects often include built-in photo guides and prompts that encourage careful identification. The result is a large, continuously updated dataset that would be difficult for a small research team to collect alone. The writer wants to add a sentence after the third sentence that explains how projects improve data reliability. Which choice best accomplishes this?
17. The scientist almost discovered the cure for the disease.
18. In the draft below, the writer wants to place a sentence where it best fits. [1] The first time I tried making sourdough, I assumed the starter would behave like commercial yeast. [2] I mixed flour and water, set the jar on the counter, and waited. [3] The next morning, nothing had happened. [4] I learned that temperature matters: a cold kitchen slows fermentation. [5] After moving the jar to a warmer spot, I finally saw bubbles. Where should the following sentence be placed? "Without warmth, the microorganisms in the starter become less active."
19. Eager to start the vacation, the bags were packed by the family.
20. At the science fair, three judges compared projects and wrote comments on a shared rubric. Afterward, the teacher collected the judges notes and photocopied them for the students to review. Which choice makes the sentence most grammatically acceptable?

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