Let's break this down systematically.
Understanding the Debate:
Professor's Argument:
Premise 1: Rap musicians work alone (don't need to accommodate others).
Premise 2: Learning rap is less formal than learning instruments.
Conclusion: Therefore, rap is "extremely individualistic and nontraditional."
Critic's Response:
Counters that rap uses older songs (appeals to tradition).
Notes rap has developed its own traditions.
Points out successful rappers conform to public preferences (not purely idiosyncratic).
Analyzing the Critic's Strategy:
The critic doesn't attack the professor's premises directly. Instead, they introduce new observations that contradict the professor's conclusion:
Rap incorporates tradition (vs. "nontraditional").
Rappers conform to public taste (vs. "extremely individualistic").
This undermines the conclusion by showing rap isn't as individualistic/nontraditional as claimed.
Evaluating the Options:
(A) Incorrect. The critic doesn't challenge the professor's premises (working alone, informal learning). They add new counterpoints.
(B) Correct. The critic introduces additional observations (use of older songs, public conformity) that the professor ignored, challenging the conclusion.
(C) Incorrect. The professor isn't generalizing to broader musical contexts; they're only discussing rap.
(D) Incorrect. The critic doesn't offer an "alternative explanation" for the professor's evidence (e.g., why rappers work alone). They present new counter-evidence.
(E) Incorrect. The critic doesn't challenge "each claim" about tradition/individuality—only the conclusion.
Why (B) is Best:
The critic's approach is to undermine the conclusion by introducing facts the professor overlooked, showing rap isn't purely individualistic/nontraditional.
Final Answer: B