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:
Beer is made from fermented grains and has an alcohol content of ____ to six percent.\Question: Choose the right answer from options given a) zero b) three c) two d) ten

Ex Output:
b


Ex Input:
Material culture is the realm of ____ dimensional objects that make up our everyday environment.\Question: Choose the right answer from options given a) ten b) three c) six d) four

Ex Output:
b


Ex Input:
Smoking is responsible for ____ out of four cases of heart disease.\Question: Choose the right answer from options given a) eight b) two c) one d) six

Ex Output:

c