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: Quarks also come in ____ 'colours', terms for a property a little like electrical charge.\Question: Choose the right answer from options given a) three b) nine c) six d) no

Output: a


Input: Consider Input: Pelicans use ____ different ways to feed.\Question: Choose the right answer from options given a) no b) nine c) one d) two

Output: d


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


Output: a