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: Streptomyces are of special interest for ____ reasons.\Question: Choose the right answer from options given a) nine b) seven c) four d) two

Output: d


Input: Consider Input: Butterflies have ____ stages in their life cycle.\Question: Choose the right answer from options given a) two b) four c) no d) eight

Output: b


Input: Consider Input: Aardvarks have four sharp, spoon-shaped claws on their front feet and ____ on their hind feet.\Question: Choose the right answer from options given a) four b) no c) five d) six


Output: c