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').

Input: Consider 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

Output: b


Input: Consider Input: Spores have ____ combinations of sexes.\Question: Choose the right answer from options given a) four b) five c) seven d) three

Output: a


Input: Consider Input: Ground squirrels breed once a year, averaging seven to ____ per litter.\Question: Choose the right answer from options given a) nine b) two c) eight d) five


Output: c