Passage Summary: An editor is picking essays for a book from three authors, but they can't use all three at once, and if they pick Knight, they must also pick Jones.

Reasoning: The textbook must include at least one of three authors (Lind, Knight, or Jones), but it cannot include all three; furthermore, including Knight requires including Jones.

Analysis: This is a logic game in miniature, and we need to find the necessary inference. If Knight is in the book, the rules tell us Jones must also be in. However, we also know that we cannot have all three (Lind, Knight, and Jones) together. Therefore, if Knight and Jones are both in, Lind must be out to satisfy the 'no all three' rule. Look for an answer choice that reflects this deduction: if Knight is included, Lind is excluded.