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: Genetic mapping divides the chromosomes in ____ bands.\Question: Choose the right answer from options given a) ten b) two c) four d) nine
Example Output: b

Example Input: Elephants rise ____ inches when they inhale.\Question: Choose the right answer from options given a) two b) five c) one d) eight
Example Output: a

Example Input: Kittens are dependent on their mother for ____ to six months.\Question: Choose the right answer from options given a) three b) five c) eight d) one
Example Output:
b