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]: Redwoods reproduce ____ ways.\Question: Choose the right answer from options given a) zero b) two c) six d) nine
[EX A]: b

[EX Q]: Most families have between ____ and eight children.\Question: Choose the right answer from options given a) four b) one c) five d) three
[EX A]: c

[EX Q]: Complex machines are ____ or more simple machines working together.\Question: Choose the right answer from options given a) one b) two c) three d) four
[EX A]:
b