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: Fryers have ____ thermostats.\Question: Choose the right answer from options given a) five b) three c) two d) one

A: c
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Q: All baleen whales have ____ blow holes.\Question: Choose the right answer from options given a) zero b) four c) seven d) two

A: d
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Q: Planaria has rudimentary eyes which produce ____ images but detect direction.\Question: Choose the right answer from options given a) two b) no c) ten d) three

A:
b
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