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: Double price is based on two golfers sharing ____ room.\Question: Choose the right answer from options given a) one b) zero c) six d) nine
Example Output: a

Example Input: Children now account for only ____ percent of all forest fires caused in the United States.\Question: Choose the right answer from options given a) five b) four c) eight d) nine
Example Output: b

Example Input: Aspiration pneumonia includes ____ syndromes based on the nature of the inoculum.\Question: Choose the right answer from options given a) three b) seven c) eight d) no
Example Output:
a