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').

Input: Consider Input: Bilingual teachers are more than people who speak ____ languages.\Question: Choose the right answer from options given a) five b) two c) three d) ten

Output: b


Input: Consider Input: Most volcanoes erupt for ____ to four weeks and then rest.\Question: Choose the right answer from options given a) three b) four c) one d) eight

Output: a


Input: Consider Input: Square root is a continuous function for nonnegative x , and the square root of ____ is zero.\Question: Choose the right answer from options given a) seven b) four c) six d) zero


Output: d