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]: Nymphs feed and mature through five instars in about ____ to eight weeks.\Question: Choose the right answer from options given a) six b) five c) seven d) zero
[A]: a


[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]: Barnacles grow in ____ neatly fitted plates that overlap to form a ring.\Question: Choose the right answer from options given a) two b) four c) seven d) six
[A]:
d