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').

Example Input: Insects have ____ pairs of legs and three body segments.\Question: Choose the right answer from options given a) one b) nine c) no d) three
Example Output: d

Example Input: Blankets can take up to ____ days to dry in the colder months.\Question: Choose the right answer from options given a) eight b) three c) two d) nine
Example Output: b

Example Input: Young rabbits mature quickly and are self-sufficient after only ____ or five weeks.\Question: Choose the right answer from options given a) four b) two c) six d) eight
Example Output:
a