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: Islamic practice is based on what are called the ____ pillars of faith.\Question: Choose the right answer from options given a) eight b) one c) five d) four
Example Output: c

Example Input: Huntsman spiders have large, hairy bodies with ____ long legs.\Question: Choose the right answer from options given a) three b) eight c) ten d) six
Example Output: b

Example Input: Temperature causes the matter to exist in ____ different states.\Question: Choose the right answer from options given a) six b) eight c) three d) one
Example Output:
c