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: Fluoroscopy has ____ magnification modes and image capture.\Question: Choose the right answer from options given a) zero b) two c) nine d) eight
Example Output: b

Example Input: Interpersonal conflict exists whenever ____ or more people disagree.\Question: Choose the right answer from options given a) five b) seven c) no d) two
Example Output: d

Example Input: Some vertebrates can survive freezing, but ____ vertebrates can survive grinding.\Question: Choose the right answer from options given a) seven b) ten c) no d) two
Example Output:
c