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 Input:
Oranges signify good health, and the number ____ sounds like the word for prosperity.\Question: Choose the right answer from options given a) eight b) ten c) seven d) five

Ex Output:
a


Ex Input:
Perennial grass takes three to ____ years before it is mature enough to produce adequate seed.\Question: Choose the right answer from options given a) five b) seven c) six d) four

Ex Output:
a


Ex Input:
Plants have sentient spirits, ____ less than humans or animals.\Question: Choose the right answer from options given a) two b) three c) no d) ten

Ex Output:

c