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').

Example Input: Waves can sometimes reach ____ feet tall, while still being playful and fun.\Question: Choose the right answer from options given a) nine b) eight c) ten d) no
Example Output: c

Example Input: Government buildings fly flags of the ____ nations.\Question: Choose the right answer from options given a) ten b) no c) seven d) two
Example Output: d

Example Input: Any number multiplied by ____ equals zero.\Question: Choose the right answer from options given a) ten b) eight c) zero d) six
Example Output:
c