In the course of my explorations twenty-five years ago, I found five sawmills located on or near the lower margin of the Sequoia belt, all of which were cutting more or less Big Tree lumber, which looks like the redwood of the coast, and was sold as redwood. One of the smallest of these mills in the season of 1874 sawed two million feet of Sequoia lumber. —"Save the Redwoods,"
John Muir

Which statement best describes the point Muir is making in the passage?

Which detail appeals to the reader’s logic?

Which detail establishes credibility?