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]: Prairie voles look like rodents with small rounded bodies, ____ short legs and a short tail.\Question: Choose the right answer from options given a) two b) nine c) four d) zero
[A]: c


[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


[Q]: Vertebrates exhibit all ____ of the chordate characteristics at some point during their lives.\Question: Choose the right answer from options given a) nine b) one c) no d) three
[A]:
d