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: Most viruses have only ____ organelles.\Question: Choose the right answer from options given a) ten b) two c) four d) eight

Output: b


Input: Consider Input: Calves can browse and follow their mother at three weeks old and are weaned at ____ months.\Question: Choose the right answer from options given a) five b) seven c) four d) three

Output: a


Input: Consider Input: Deserts are regions that receive less than ____ inches of rain a year.\Question: Choose the right answer from options given a) no b) zero c) five d) ten


Output: d