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: Statistics show, however, that men are ____ times more likely to be lefty than women.\Question: Choose the right answer from options given a) four b) three c) nine d) two
Example Output: b

Example Input: Neutrinos are particles with almost ____ mass and no electric charge.\Question: Choose the right answer from options given a) no b) two c) zero d) five
Example Output: a

Example Input: Many children show ____ symptoms of poisoning.\Question: Choose the right answer from options given a) no b) ten c) six d) seven
Example Output:
a