"Luscious" means delicious.

"Industrial" means of or relating to manufacturing or heavy-duty. None of the other answers are close in meaning to "industrial": "prolonged" means extended; "eventful" means significant; "rural" means of or relating to the countryside, as opposed to the city; and "current" means of, related to, or happening at the present time.

"Dingy" means grimy, dirty or depressing, so "grimy" is the correct answer.. For clarification, "immaculate" means perfect, unblemished, or spotless, and is an antonym "dingy" and "grimy." As for the other answers, "careless" means inattentive; "careful" means cautious or attentive, and "pointless" means futile.

"Gaunt" means very skinny or skeletal and is most similar in meaning to "emaciated," which means skinny to the point of ill health. So, "emaciated" is the correct answer. "Corpulent," "portly," and "rotund" all mean fat or round and are antonyms of "gaunt" and "emaciated," and "fraudulent" means fake or false.

"Robust" means strong and sturdy, so "sturdy" is the correct answer. "Fragile" is an antonym of "robust" and "sturdy"; it means weak and easily broken. "Flawed" means having defects or problems. "Humorous" means funny or hilarious. "Illiterate" means not knowing how to read or write, as the negative prefix "il-" means not, and "literate" means knowing how to read and write. This makes sense because the root "lit" means having to do with letters; the root appears in other words like "literature" and "alliterate."

"Grimy" means dirty or filthy, so "filthy" is the correct answer. "Immaculate" is an antonym of "grimy" and "filthy"; it means perfectly clean. "Enormous" means very big in size. "Energetic" means lively or having a lot of energy. "Studious" means spending a lot of time on academic work.

"Tepid" means of a temperature that is mild, verging on cold. So, it is most similar in meaning to "lukewarm," which means of a moderate temperature, and "lukewarm" is the correct answer. For clarification, "stifling" means very hot, "frigid" means very cold, "boring" means not holding one's attention or interest, and "conclusive" means definitive.

Someone who is parched is very thirsty, so "thirsty" is the correct answer. For clarification, "hungry" means needing food, "tired" means lacking energy or needing sleep, "sad" means unhappy and "happy" means glad or cheerful.

Someone who is "nimble" is highly flexible and agile, so "flexible," which means able to bend, is the correct answer. For clarification, "rudimentary" and "elementary" are synonyms that both mean basic or simple, "complex" is an antonym of "rudimentary" and "elementary" that means complicated, and "frigid" means very cold.

"Pristine" means clean or unused, so "clean" is the correct answer. None of the other answer choices are close in meaning to "pristine": "unyielding" contains the negative prefix "un-," which means not, so you might be able to infer that it means not yielding, or in other words, stiff or inflexible; "famous" means well-known; "intricate" means complex or complicated; and "unconcerned" means not concerned or not interested, which you again might be able to infer from the presence of the prefix "un-."