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


[Q]: Habitat destruction is a concern for all ____ gorilla subspecies.\Question: Choose the right answer from options given a) no b) four c) three d) five
[A]: b


[Q]: Calories come in ____ food components.\Question: Choose the right answer from options given a) one b) three c) zero d) ten
[A]:
b