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]: Black widows mature in ____ to four months.\Question: Choose the right answer from options given a) two b) seven c) eight d) zero
[EX A]: a

[EX Q]: Prairie voles look like rodents with small rounded bodies, ____ short legs and a short tail.\Question: Choose the right answer from options given a) two b) nine c) four d) zero
[EX A]: c

[EX Q]: Dreams are the wanderings of the spirit though all nine heavens and all ____ earths.\Question: Choose the right answer from options given a) nine b) seven c) no d) six
[EX A]:
a