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').

[EX Q]: Vision disorders affect ____ in every four school-age children.\Question: Choose the right answer from options given a) nine b) one c) five d) six
[EX A]: b

[EX Q]: Electrolytic capacitors have a finite lifetime, usually about ____ years.\Question: Choose the right answer from options given a) zero b) ten c) four d) eight
[EX A]: b

[EX Q]: New cementum appears on root surfaces ____ to eight weeks after osseous surgery.\Question: Choose the right answer from options given a) six b) ten c) two d) five
[EX A]:
a