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: Hydra has ____ distinct methods of reproduction, asexual and sexual.\Question: Choose the right answer from options given a) two b) zero c) no d) ten
Example Output: a

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: Male blackbucks possess long horns, ringed at the base, and spirally twisted up to ____ turns.\Question: Choose the right answer from options given a) five b) two c) ten d) eight
Example Output:
a