Explanation
GMAT passages tend to be well-written in the respect that
they tend to be free from irrelevant details; most details support the overall
idea. In this case, the fast-food restaurant case gives an example that allows
the author to describe how companies generally have optimized staffing, and the
way in which that staffing is optimized means that they won't necessarily
reduce staffing levels if minimum wages are raised. Let's do a pass through
these answer choices and see which ones are consistent with that basic idea.
Choice (A) sounds about right, especially since "misconception" can refer to
the "myth" described by the author. (B) is out because
the author doesn't describe a contradiction; as we pointed out in our first
read, the author doesn't spend a lot of time describing the myth. (C) is
generic but doesn't appear to have an objective flaw. How does it compare to
(A)? Looking back, we can see that (A) says that the fast-food example exemplifies a misconception, according
to (A). But that's not accurate, because the example is an example of the
reality, not the myth. So (A) is out and (C) is in. (E) is out for reasons
similar to (A). And there is no comparison of ideas, so (D) is out.
The correct answer is (C).
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