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:
Conflict occurs between when ____ people have a car accident.\Question: Choose the right answer from options given a) no b) eight c) two d) nine

Ex Output:
c


Ex Input:
Most bioluminescence is blue for ____ reasons.\Question: Choose the right answer from options given a) seven b) two c) four d) zero

Ex Output:
b


Ex Input:
Many Viennese houses have of ____ or more staircases.\Question: Choose the right answer from options given a) seven b) two c) six d) eight

Ex Output:

b