A. He confuses the definitions of absent and unemployed.
Incorrect choice because manager actually doesn’t confuse these two things.
He or she is going to lay off many people and rather than keep them absent.
So incorrect.
B. He fails to justify an assumed change in absenteeism.
Correct. He assumes that 4750 employees will never be absent from their job.
Indeed now he has 5% absenteeism, and 95% workers still manage with the job.
However, what if 5% absenteeism tendency remains and 237 of 4750 workers are absent after the lay off?
Then probably they are not going to handle the job as before.
So, manager unwarrantedly assumes that 5% absenteeism will fall to 0%
However, manager didn’t justify why?
C. He takes for granted that every employee’s level of service is identical.
Incorrect because nothing in the passage alludes to such information
Manager may very well be of opposite idea.
D. He overlooks the fact that some absences are more justified than are others.
This choice especially has nothing to do with the stem.
E. He ignores the possibility that absences may be unevenly distributed at the company.
Incorrect because nothing in the passage alludes to such information
Manager may very well be of opposite idea.
So B