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]: Brachiopods are superficially similar to bivalves, both having ____ shells.\Question: Choose the right answer from options given a) two b) eight c) seven d) one
[A]: a


[Q]: Control is defined as a dead plant with ____ signs of life.\Question: Choose the right answer from options given a) ten b) nine c) no d) zero
[A]: c


[Q]: White bait is a small ____ to four inch fish with white sides and a greenish back.\Question: Choose the right answer from options given a) three b) no c) zero d) one
[A]:
a