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: Many aneurysms have ____ symptoms until they burst.\Question: Choose the right answer from options given a) no b) five c) six d) seven

Output: a


Input: Consider Input: China has about ____ in four of all smokers in the world.\Question: Choose the right answer from options given a) one b) seven c) ten d) six

Output: a


Input: Consider Input: Anthropology is composed of ____ fields.\Question: Choose the right answer from options given a) no b) three c) four d) six


Output: c