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]: Baby elephants are usually dependent on mother s milk for at least ____ years.\Question: Choose the right answer from options given a) six b) three c) two d) seven
[EX A]: b

[EX Q]: Sexual maturity occurs at three to four years for females and ____ to five years for males.\Question: Choose the right answer from options given a) nine b) seven c) five d) four
[EX A]: d

[EX Q]: Sheep are ____ times more susceptible to copper toxicity than cattle.\Question: Choose the right answer from options given a) eight b) four c) ten d) zero
[EX A]:
c