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').

Input: Consider Input: Females inherit ____ X chromosomes, one from each parent.\Question: Choose the right answer from options given a) five b) two c) no d) seven

Output: b


Input: Consider Input: Most school aged children pass at least ____ stools per week, with an average of one stool per day.\Question: Choose the right answer from options given a) three b) one c) six d) zero

Output: a


Input: Consider Input: Cats infected usually die within ____ years.\Question: Choose the right answer from options given a) ten b) four c) eight d) two


Output: d