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:
Ants have ____ distinct body parts.\Question: Choose the right answer from options given a) nine b) zero c) no d) three

Ex Output:
d


Ex Input:
Gravity is the force that brings ____ objects together .\Question: Choose the right answer from options given a) five b) two c) one d) nine

Ex Output:
b


Ex Input:
Most sharks have five pairs of gill slits, but some have six or ____ pairs.\Question: Choose the right answer from options given a) five b) no c) seven d) nine

Ex Output:

c