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: Peonies grow from two to ____ feet in height.\Question: Choose the right answer from options given a) five b) zero c) three d) four
Example Output: d

Example Input: Some programming languages have ____ or more standards.\Question: Choose the right answer from options given a) no b) seven c) two d) three
Example Output: c

Example Input: Most children recover completely in ____ to three months.\Question: Choose the right answer from options given a) three b) no c) eight d) two
Example Output:
d