Studies show that _____ of night-shift workers report falling asleep at least once a week while on the job.

Studies show that _____ of night-shift workers report falling asleep at least once a week while on the job.



a. 10 to 30 percent
b. 30 to 50 percent
c. 50 to 70 percent
d. 70 to 90 percent




Answer: B


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