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:
Unequal cleavage can occur in ____ ways.\Question: Choose the right answer from options given a) two b) seven c) three d) ten

Ex Output:
a


Ex Input:
Lizards generally have ____ legs and movable eyelids.\Question: Choose the right answer from options given a) four b) two c) five d) zero

Ex Output:
a


Ex Input:
Weight is proportionate to body volume, measured in ____ dimensions.\Question: Choose the right answer from options given a) three b) seven c) zero d) eight

Ex Output:

a