Labor costs are the dominant cost of doing business in all but a few endeavors. For most jobs, the variation in individual work-related performance is likely to be greater than the range in compensation; thus it is possible to maintain productivity and work quality while decreasing labor costs.

my take is B .i can take figures to explain .let us say there are 2 people in my company one with the productivity of 100 units and other with the productivity of 10 units .now the premise says that variation in work related performance is likely to be more than the range in compensation ,so lets say that my guy with 100 units gets 100 $ and the guy with 10 units gets 90 $ .
now because the argument concludes that it is possible to maintain productivity and work quality while decreasing labor costs. so it assuming that i can reduce the compensation of my 100 units guy without affecting his unit output
this leads me to B
plz share the OA and the source

Yes the option B is surely the correct answer. Two ways:-

If let us see that you see all the other options, then they get cancelled as they are extreme statements and only B remains.

Also, B can be inferred from the passage above.

The only question that I have is that can Option B also be the assumption for this question.

According to me this is an assumption question and not an inference question.

In the stimulus a conclusion is present, option B is an assumption.

A - "Employers" includes everyone, but the argument has some exceptions when it says - "all but a few endeavors" & "For most jobs" -> not all the jobs ! Extreme words. Out !

C - "No employer should expect". Same reason as A. Extreme words. Out !

D - Seems a lil bit far-fetched. Argument jus says "the variation in performance". It doesn't say anything about the preference of some employees !

E - Out of scope !

Hence, B !