First, identify the GOAL in the conclusion:The argument says: "in order to
further the educational purposes of the university..."
This is critical! To weaken this argument, you must show that
educational purposes will NOT be furthered.
Why B is correct:B says: Students will be
less likely to go to class if notes are posted online.
Here's the chain:
• Notes online → Students skip class → Students learn
LESS → Educational purposes
HURTThis is a classic
"solution backfires" weakener — the proposed solution causes the
opposite of its intended effect!
Why C is wrong:C says: Professors pay for
physical copies out of pocket due to insufficient
copying funds.
Here's the problem:The proposal is to post notes
ONLINE — not to make physical copies!
C addresses the
current system (physical distribution).
The proposal is about a
different system (online posting).
Online posting doesn't require copying funds, so C is
irrelevant to the proposal.
Key Takeaway:When an argument has a
stated goal ("to further educational purposes"), the weakener must show that
the goal won't be achieved — not just any random problem.
• B attacks the goal directly ✓
• C talks about costs, not educational outcomes ✗
Answer: B