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').

Q: Embrasures have ____ functions.\Question: Choose the right answer from options given a) three b) seven c) zero d) nine

A: a
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Q: Females inherit ____ X chromosomes, one from each parent.\Question: Choose the right answer from options given a) five b) two c) no d) seven

A: b
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Q: Earth is ____ and one-half times more massive than Mars.\Question: Choose the right answer from options given a) two b) no c) three d) four

A:
a
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