How might a reader find subheadings useful?

1. readers can use them to identify main ideas at a glance.

2. readers can use them to make connections to knowledge.

3. readers can use them to obtain summary information quickly.

4. readers can use them to understand a visual element’s content.

1 and 2 if u can only pick one than  go with 1 that is best answer  to me

hope this helps

:)

1. Readers can use them to identify main ideas at a glance.

Explanation:

Subheadings give the reader a very quick idea of what each section under the subheading may contain. It helps the reader to understand the organization of the text as well. The subheadings do not contain summary information or visual content. And while the reader may inadvertently make a connection to the phrase of a subheading, they are not written with this purpose.