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').

[Q]: Most endocrinologists see patients every ____ months throughout the pregnancy.\Question: Choose the right answer from options given a) six b) two c) zero d) three
[A]: b


[Q]: Lines of force are ____ dimensional, surrounding a bar magnet on all sides.\Question: Choose the right answer from options given a) eight b) three c) zero d) no
[A]: b


[Q]: Protein stability Give ____ examples of stabilizing mutations that mainly influence entropy.\Question: Choose the right answer from options given a) three b) nine c) one d) seven
[A]:
a