How does the sidebar supplement the rest of the passage? 1. It explains difficult terms listed in the main piece.
2. It adds practical guidelines to support the main piece.
3. It reinforces the importance of literary criticism.
4. it provides an alternative way to write literary criticism

2. It adds practical guidelines to support the main piece

Explanation:

A sidebar is a short piece of information that is written to supplement information about a main article and is usually found by its side in a smaller text size.

A sidebar supplements the rest of a passage by adding practical guidelines that support the main piece.

yes

explanation: