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:
Popular racism seems most prevalent in Italy which saw ____ deaths at the hands of racists.\Question: Choose the right answer from options given a) five b) two c) one d) four

Ex Output:
d


Ex Input:
Fish are sexually mature at age ____ and six year old fish are common.\Question: Choose the right answer from options given a) three b) no c) five d) one

Ex Output:

a