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]: Most people recover in one to ____ months.\Question: Choose the right answer from options given a) no b) three c) seven d) eight
[A]: b


[Q]: Black bears stand ____ to six feet long and almost three feet at the shoulders when on all fours.\Question: Choose the right answer from options given a) three b) five c) four d) one
[A]: b


[Q]: Food chains consist of ____ trophic levels.\Question: Choose the right answer from options given a) ten b) three c) one d) four
[A]:
d