How do text features contribute to a text’s structure? check all that apply.

by offering supplemental information
by stating counterclaims
by providing organization
by offering a bibliography
by reinforcing ideas

The correct answer are the following ones:
1. by offering supplemental information
3. by providing organization
5. by reinforcing ideas

This is how text features contribute to a text's structure. They give enough information about the text itself. They organize the text in such a way that it is more understandable. They also support your main arguments in the text itself.

Perpendicular line? no.