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: Sexual reproduction is varied in ____ ways.\Question: Choose the right answer from options given a) seven b) two c) five d) three

Output: d


Input: Consider Input: Vision problems affect one in ____ school-aged children.\Question: Choose the right answer from options given a) six b) four c) seven d) one

Output: b


Input: Consider Input: Abdominal scars consist of ____ to four half-inch incisions.\Question: Choose the right answer from options given a) two b) seven c) nine d) six


Output: a