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:
Angiosperms inhabit all ____ continents, as well as the oceans.\Question: Choose the right answer from options given a) five b) seven c) three d) zero

Ex Output:
b


Ex Input:
Some species can make dives over ____ hundred feet deep.\Question: Choose the right answer from options given a) six b) eight c) two d) one

Ex Output:
b


Ex Input:
Some babies spend six to ____ months after their due dates in the nursery.\Question: Choose the right answer from options given a) ten b) one c) nine d) five

Ex Output:

c