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]: Many animals use two or ____ forest structure types.\Question: Choose the right answer from options given a) eight b) zero c) two d) three
[A]: d


[Q]: Toucanets encompass ____ genera.\Question: Choose the right answer from options given a) seven b) six c) two d) one
[A]: c


[Q]: Spacemen float around at near ____ g when they get up there in orbit.\Question: Choose the right answer from options given a) zero b) one c) two d) seven
[A]:
a