Given a sentence with a missing word, pick the answer option that best fills out the missing word in the sentence. Indicate each answer with its index ('a', 'b', 'c', 'd').
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Question: Mammals have only ____ sets of teeth.\Question: Choose the right answer from options given a) six b) five c) seven d) two

Answer: d


Question: Decapod crustaceans have ____ pairs of limbs.\Question: Choose the right answer from options given a) five b) four c) six d) seven

Answer: a


Question: Hummingbirds have ____ main feeding strategies.\Question: Choose the right answer from options given a) two b) eight c) four d) six

Answer:
a