"Lavish" means rich or fancy, so "luxurious," an adjective that means suptuous or grand, is the correct answer. None of the other answer choices are close in meaning to "lavish": "comfortable" means relaxing, agreeable, or cozy; "frigid" means extremely cold; "arid" means extremey dry; and "deafening" means very loud.

"Quaint" means old-fashioned and charming. "Putrid" means decayed or rotten. "Negligent" means not cautious or careless. "Compassionate" means sympathetic or showing emotion and concern for others. "Timid" means shy and easily scared. 

"Winding" refers to a twisted or spiral course or path. "Unique" means rare or one-of-a-kind. "Wordy" means the overuse of words. "Olfactory" refers to a sense of smell. "Juvenile" means young and immature.

"Supple" means "limber" or flexible. "Inflexible" is an antonym of "supple"; it means stiff or not able to be bent. "Vulgar" means tasteless or unrefined. "Innocuous" means harmless. "Savage" means wild or ferocious.

“Macabre” means gruesome, horrifying, or pertaining to death, so "gruesome" is the correct answer. None of the other answers are close in meaning to “macabre”. “Understated” means modest or simple. “Protective” means defensive or shielding. “Panicked” means frightened. “Methodical” means systematic. 

"Scintillating" means emitting small amounts of light. "Sparkling," which also means emitting bits of light, is therefore the correct answer. The other answers do not have similar meanings: "luxurious" means comfortable and expensive; "forbidden" means prohibited; "maximum" means most or highest; and "boring" means dull.

"Frigid" means very cold, so "cold" is the correct answer. The other choices have nothing to do with "cold": "silent" means not making noise, "emotional" means showing emotion, "sparse" means infrequent or few, and "wealthy" means having lots of money.

"Obtrusive" means noticeable, in an unwanted way. The correct answer "conspicuous" also means very noticeable. The other choices do not have similar definitions: "welcome" means invited, "indecisive" means unable to make a decision, "traumatic" means very difficult and unpleasant, and "leftover" means remaining after a meal or an event.

"Diaphanous" is an adjective that often is used to describe fabrics, and means delicate and not completely opaque. So, the answer choices closest in meaning to "diaphanous" are "gauzy" and "frangible." While "frangible" means easily breakable, "gauzy" means thin and not completely opaque. Since "gauzy" is the closest synonym of "diaphanous" amongst the possible answer choices, it is the correct answer.

“Lithe” means flexible and/or graceful, so "graceful" is the correct answer. For clarification, "portly" means fat, and "cantankerous" means bad-tempered.