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: All loci have ____ or two alleles.\Question: Choose the right answer from options given a) no b) six c) four d) one

A: d
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Q: Minks travel more than most furbearers, covering up to ____ miles a night.\Question: Choose the right answer from options given a) four b) five c) zero d) ten

A: d
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Q: Some species have short, useless wings, and others have ____ wings at all.\Question: Choose the right answer from options given a) one b) no c) four d) seven

A:
b
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