Passage Summary: Beckstein argues ASL shouldn't count as a foreign language because it's native to North America. Sedley counters by showing that this same logic would unfairly disqualify popular languages like French and Spanish.

Conclusion: Professor Beckstein's reasoning is flawed because it leads to an unacceptable conclusion regarding other languages.

Reasoning: Sedley points out that French and Spanish are also native to North Americans; if Beckstein's rule were applied consistently, these languages would also be banned, which is an absurd result.

Analysis: This is a classic 'Method of Reasoning' question where the respondent uses a 'reductio ad absurdum.' Sedley doesn't just say Beckstein is wrong; she shows that Beckstein's specific premise leads to a consequence that almost everyone would find unacceptable. By applying Beckstein's logic to French and Spanish, Sedley demonstrates that the original argument's criterion is too broad or inconsistently applied. Look for an answer that describes the strategy of showing that a principle has undesirable or absurd implications when applied to other cases.