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]: Most females are sexually mature at about ____ to six years.\Question: Choose the right answer from options given a) eight b) nine c) five d) two
[EX A]: c

[EX Q]: Pandas reach adulthood at about ____ years of age.\Question: Choose the right answer from options given a) eight b) seven c) five d) six
[EX A]: c

[EX Q]: Summer is a time for breaking the customs or habits of the other ____ seasons of the year.\Question: Choose the right answer from options given a) two b) three c) one d) eight
[EX A]:
b