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]: Calves can swim ____ days after they are born.\Question: Choose the right answer from options given a) ten b) two c) zero d) one
[A]: b


[Q]: Copper is ____ times higher in dog liver than in human liver.\Question: Choose the right answer from options given a) three b) ten c) six d) one
[A]: b


[Q]: Communities have few or ____ dogs and cats because they've been eaten.\Question: Choose the right answer from options given a) two b) nine c) six d) no
[A]:
d