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]: Roundworms are fairly large worms that can grow to be ____ or five inches long.\Question: Choose the right answer from options given a) no b) nine c) four d) zero
[EX A]: c

[EX Q]: Some sources claim there are more like ____ million vertebrate animals in zoos.\Question: Choose the right answer from options given a) six b) five c) one d) three
[EX A]: b

[EX Q]: Sin has ____ effects on every person's life.\Question: Choose the right answer from options given a) eight b) four c) two d) six
[EX A]:
c