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: Stringers consist of ____ narrow pieces of wood glued together.\Question: Choose the right answer from options given a) ten b) three c) five d) seven
Example Output: b

Example Input: Ladybugs have ____ legs and keep their wings tucked away until they are ready to fly.\Question: Choose the right answer from options given a) six b) eight c) one d) zero
Example Output: a

Example Input: Tea also contains ____ other alkaloids, theobromine and theophylline.\Question: Choose the right answer from options given a) six b) two c) ten d) one
Example Output:
b