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]: Aspiration pneumonia includes ____ syndromes based on the nature of the inoculum.\Question: Choose the right answer from options given a) three b) seven c) eight d) no
[A]: a


[Q]: Molecules are ____ or more atoms stuck together.\Question: Choose the right answer from options given a) two b) zero c) six d) eight
[A]: a


[Q]: Most corporate bonds have a maturity of ____ years or less.\Question: Choose the right answer from options given a) zero b) nine c) one d) five
[A]:
d