It’s 1. People of a similar culture who live in the same time
The most accurate answer among the choices to complete the question is the fourth one (hanging indent). This refers to types of paragraphs in which only the second and succeeding lines are being indented.
Hope my answer has come to satisfy your query.
Muir's use of diction in this paragraph, clearly shows how effective his language. The bolded words, like difficult, force, crooked, struggling, etc. create a tense, painful, and frustrating mood. Muir uses these words describe how his journey was through the wading bogs, and swamps and he uses these words to describe what he went through before finding the Calypso Borealis.
