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: Bulbs bloom four to ____ weeks after planting.\Question: Choose the right answer from options given a) seven b) one c) six d) nine

Output: c


Input: Consider Input: Food chains consist of ____ trophic levels.\Question: Choose the right answer from options given a) ten b) three c) one d) four

Output: d


Input: Consider Input: Plants normally start to flower about ____ years of age.\Question: Choose the right answer from options given a) four b) three c) two d) ten


Output: c