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]: Selenium is ____ times more poisonous than arsenic.\Question: Choose the right answer from options given a) one b) five c) eight d) two
[EX A]: b

[EX Q]: Respiratory therapists complete two to ____ years of education.\Question: Choose the right answer from options given a) no b) one c) four d) eight
[EX A]: c

[EX Q]: Reproduction occur ____ ways sexual reproduction and asexual reproduction.\Question: Choose the right answer from options given a) eight b) one c) two d) zero
[EX A]:
c