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]: 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
[EX A]: a

[EX Q]: Elephants give birth to one calf every ____ to nine years on average.\Question: Choose the right answer from options given a) no b) four c) three d) seven
[EX A]: b

[EX Q]: Most soccer balls require between four and ____ pounds of air.\Question: Choose the right answer from options given a) nine b) zero c) four d) five
[EX A]:
a