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 birds have ____ legs with four toes each.\Question: Choose the right answer from options given a) zero b) one c) three d) two

A: d
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Q: Lizards generally have ____ legs and movable eyelids.\Question: Choose the right answer from options given a) four b) two c) five d) zero

A: a
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Q: Clinical reports show that about one out of ____ patients with anorexia or bulimia are men.\Question: Choose the right answer from options given a) nine b) ten c) no d) one

A:
b
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