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: All butterflies go through ____ life stages .\Question: Choose the right answer from options given a) one b) four c) zero d) five

Output: b


Input: Consider Input: Echinoderms usually have ____ appendages, but there are some exceptions.\Question: Choose the right answer from options given a) ten b) five c) seven d) three

Output: b


Input: Consider Input: Most aquatics require at least ____ hours of direct sunlight for optimum growth.\Question: Choose the right answer from options given a) zero b) seven c) five d) one


Output: c