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:
Moles breed in late winter or spring and have a gestation period of ____ to six weeks.\Question: Choose the right answer from options given a) nine b) four c) six d) five

Ex Output:
b


Ex Input:
Gestation lasts ____ months, with the birth of a single calf.\Question: Choose the right answer from options given a) three b) one c) six d) eight

Ex Output:
d


Ex Input:
Snow leopards eat almost anything they can catch, often hunting animals ____ times their size.\Question: Choose the right answer from options given a) ten b) three c) eight d) two

Ex Output:

b