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]: Baboons can travel up to ____ miles a day.\Question: Choose the right answer from options given a) seven b) three c) two d) six
[A]: d


[Q]: Marakoopa cave is a large cavern with ____ underground streams.\Question: Choose the right answer from options given a) five b) three c) two d) four
[A]:
c