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: Toenails are similar , except that they grow ____ times slower and are on the toes .\Question: Choose the right answer from options given a) two b) eight c) six d) four
Example Output: d

Example Input: Polyester has ____ favorable properties.\Question: Choose the right answer from options given a) four b) two c) seven d) six
Example Output: b

Example Input: Oestrus lasts ____ days, and mating is unusually brief.\Question: Choose the right answer from options given a) three b) seven c) eight d) five
Example Output:
d