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]: Condors become sexually mature at about five or ____ years of age and mate for life.\Question: Choose the right answer from options given a) nine b) seven c) one d) six
[A]: d


[Q]: Mountain goats have ____ sharp horns.\Question: Choose the right answer from options given a) two b) six c) ten d) four
[A]: a


[Q]: Male cats are approximately ____ times as likely to be infected as females.\Question: Choose the right answer from options given a) seven b) four c) six d) three
[A]:
d