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:
Living cells have at least ____ parts.\Question: Choose the right answer from options given a) seven b) three c) zero d) four

Ex Output:
b


Ex Input:
Rapid growth occurs for the first ____ years of life.\Question: Choose the right answer from options given a) eight b) ten c) three d) five

Ex Output:
d


Ex Input:
Oar boats are smaller than motor boats and can accommodate four to ____ people.\Question: Choose the right answer from options given a) zero b) three c) five d) no

Ex Output:

c