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:
Ants have six legs, and each leg has ____ joints.\Question: Choose the right answer from options given a) nine b) zero c) two d) three

Ex Output:
d


Ex Input:
Elephants rise ____ inches when they inhale.\Question: Choose the right answer from options given a) two b) five c) one d) eight

Ex Output:
a


Ex Input:
Most people have five fingers on each hand and ____ toes on each foot.\Question: Choose the right answer from options given a) ten b) one c) five d) six

Ex Output:

c