Sociologist: A contention of many of my colleagues—that the large difference between the wages of the highest-and lowest-paid workers will inevitably become a source of social friction—is unfounded. Indeed, the high differential should have an opposite effect, for it means that companies will be able to hire freely in response to changing but from wage levels that are static or slow changing.
What this question is testing
Your task
Find the assumption the argument requires in order for its conclusion to hold.
Common trap
Answers that would help the argument but aren't strictly required (sufficient, not necessary).
Winning move
Negate each choice — the right one breaks the argument when negated.
Reading along? Open the full official question in LawHub — we show a fragment here and keep the reasoning in our own words.