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:
Tardigrades are microscopic, water-dwelling, segmented animals with ____ legs.\Question: Choose the right answer from options given a) eight b) nine c) one d) seven

Ex Output:
a


Ex Input:
Circumcisions usually heal within ____ to two weeks.\Question: Choose the right answer from options given a) one b) five c) eight d) nine

Ex Output:
a


Ex Input:
Blood donors can give blood every eight weeks, or ____ times a year.\Question: Choose the right answer from options given a) six b) one c) two d) three

Ex Output:

a