Read the excerpt from "It's Only Fair.” "Fine!” Avery said, pushing a stack of books away and looking up at the clock on the wall. "But our paper’s due in three days and we still don’t have topic. What are we going to do?”

"It’s obvious, isn’t it?” Maritza asked. "You write why Rosa Parks is so great, and I’ll do the same for Irene Morgan. And then we’ll put it all together.”

Which best describes the relationship between character and conflict in the excerpt?

Avery is a dynamic character because the external conflict with Maritza causes her to change.
Maritza is a dynamic character because the external conflict with Avery causes her to change.
Avery is a flat character because her internal conflict causes her to change.
Maritza is a flat character because her internal conflict causes her to change.