Professor Hartley’s new book on moral philosophy contains numerous passages that can be found verbatim in an earlier published work by Hartley’s colleague, Professor Lawrence. Therefore, in view of the fact that these passages were unattributed in Hartley’s acknowledging the intellectual debt owed to Lawrence.
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.