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: Chlorine is manufactured in ____ ways.\Question: Choose the right answer from options given a) four b) two c) nine d) seven

Output: b


Input: Consider Input: Brain death occurs in just four to ____ minutes unless the heart rhythm is restored.\Question: Choose the right answer from options given a) ten b) three c) six d) nine

Output: c


Input: Consider Input: Marriage is the bringing together of the ____ sexes.\Question: Choose the right answer from options given a) one b) zero c) two d) no


Output: c