When an author shows the reader ideas about a character through their speech, thought, actions, or what others say about him, the author is using what?

Many plains indians who were forced onto reservations had trouble adapting because they were not used to living within borders. used to hunting for their food. not used to living in communities. used to working in factories.

Is this inappropriate language,”maybe i would have actually done my homework”?

What is a ridge of rock near the water's edge