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: Living cells have at least ____ parts.\Question: Choose the right answer from options given a) seven b) three c) zero d) four
Example Output: b

Example Input: Cloves Chew ____ whole cloves.\Question: Choose the right answer from options given a) three b) four c) six d) five
Example Output: d

Example Input: Dragonflies have ____ quite separate life stages.\Question: Choose the right answer from options given a) nine b) six c) two d) zero
Example Output:
c