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').

Ex Input:
Most internal parasites are specific to one or ____ species.\Question: Choose the right answer from options given a) seven b) three c) two d) five

Ex Output:
c


Ex 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

Ex Output:
c


Ex Input:
Cranes mate for life and often pair when they are three to ____ years old.\Question: Choose the right answer from options given a) one b) nine c) six d) seven

Ex Output:

c