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: Fever usually lasts for an average of ____ days in adults.\Question: Choose the right answer from options given a) zero b) three c) nine d) two

Output: b


Input: Consider Input: Alleles segregate independently yielding ____ possible allelic combinations in gametes.\Question: Choose the right answer from options given a) ten b) one c) four d) nine

Output: c


Input: Consider Input: Ocean has ____ life-important properties.\Question: Choose the right answer from options given a) ten b) one c) seven d) two


Output: d