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: Birds have ____ eyes.\Question: Choose the right answer from options given a) eight b) five c) nine d) two

Output: d


Input: Consider Input: Owls have ____ toes on each foot, like most birds.\Question: Choose the right answer from options given a) no b) seven c) four d) one

Output: c


Input: Consider Input: Some people have eyes of ____ different colors.\Question: Choose the right answer from options given a) six b) eight c) five d) two


Output: d