Read the sentence from "Through the Rapids on the Way to the Klondike." Suddenly, it narrows to one hundred yards, rounds a bend where a landing may be made in an eddy, and dashes between towering rock walls, about 80 feet apart.

Based on the sentence, a reader could infer that the rapids of the Sixty Mile River hold many dangers.

How does the sentence support this inference?

Through the Rapids on the Way to the Klondike

The sentence describes the features and movements that make this part of the river dangerous.
The sentence expresses the author's opinion about how dangerous the river is.
The sentence emphasizes the calmness of one part of an otherwise dangerous river.
The sentence explains how boats could be damaged or smashed in the dangerous river.