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: Fluorescent lamps are roughly ____ times more intense than ordinary lightbulbs.\Question: Choose the right answer from options given a) six b) one c) three d) eight

Output: c


Input: Consider Input: Phytochemicals are non-nutritive substances, in that they contain ____ vitamins or minerals.\Question: Choose the right answer from options given a) four b) one c) no d) ten

Output: c


Input: Consider Input: Manatees reach sexual maturity in two to ____ years.\Question: Choose the right answer from options given a) three b) no c) eight d) five


Output: d