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: Human females have ____ X chromosomes.\Question: Choose the right answer from options given a) two b) six c) one d) eight

Output: a


Input: Consider Input: Piglets normally grow about half their potential growth rate from birth to ____ weeks of age.\Question: Choose the right answer from options given a) zero b) no c) five d) three

Output: d


Input: Consider Input: Slot machines are casino games based on ____ or more spinning reels.\Question: Choose the right answer from options given a) four b) ten c) one d) three


Output: d