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:
Children are more likely than adults to show ____ symptoms even if they are infected.\Question: Choose the right answer from options given a) eight b) two c) no d) six

Ex Output:
c


Ex Input:
Japan is a highly urbanised country, with approximately three in every ____ people living in cities.\Question: Choose the right answer from options given a) seven b) two c) four d) eight

Ex Output:
c


Ex Input:
Hedgehogs are eighteen to twenty ____ ounces when grown up.\Question: Choose the right answer from options given a) one b) three c) five d) four

Ex Output:

c