Passage Summary: A college department took a big donation from a publisher after picking their book for a class. The boss says the money didn't influence them, pointing out that their own committee liked the book best.

Conclusion: The textbook was chosen solely for academic reasons rather than for the financial donation.

Reasoning: The department chair points to the fact that an internal textbook committee gave that specific book its highest rating as proof of an unbiased decision.

Analysis: The chair's defense rests entirely on the integrity of the textbook committee. To weaken this argument, we need to cast doubt on that committee's independence. If the committee members were aware of the potential donation or felt pressure from the chair to pick that specific book, their 'highest rating' is no longer objective proof of academic merit. In the world of academic politics, a 'recommendation' can sometimes be a polite way of following the money.