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]: Chinese cuisine has ____ tolerance for animal rights groups.\Question: Choose the right answer from options given a) ten b) zero c) four d) no
[A]: b


[Q]: Some ticks feed on only ____ host throughout all three life stages.\Question: Choose the right answer from options given a) two b) one c) no d) three
[A]:
b