A detail that is connected to the main idea is called information.

key

Explanation:

Anything connected to the main idea is "key" information or "valuable" info that helps you understand the main idea.

in the quotation from passage, connie willis states that literature is a way for authors from the past to communicate with readers of today. we can read their stories, books, and other texts to learn lessons about life. willis refers to these lessons as messages “from beyond the grave.” willis has a favorable viewpoint about the timelessness of literature.

1 - a

2 - a

3 - c

4 - b

5 - d