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: Most children improve in three to ____ days.\Question: Choose the right answer from options given a) seven b) six c) four d) ten

Output: a


Input: Consider Input: Female cats can go into heat for the first time as early as ____ months of age.\Question: Choose the right answer from options given a) four b) zero c) five d) eight

Output: c


Input: Consider Input: Striped whipsnakes seem to prefer temperatures from seventy five to ninety ____ degrees Fahrenheit.\Question: Choose the right answer from options given a) eight b) no c) nine d) zero


Output: c