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').

[EX Q]: Worker bees have ____ pairs of wax glands on the underside of their abdomens.\Question: Choose the right answer from options given a) no b) two c) nine d) four
[EX A]: d

[EX 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
[EX A]: b

[EX Q]: Most people have only ____ hands.\Question: Choose the right answer from options given a) eight b) one c) two d) four
[EX A]:
c