A comma and a conjunction always work well but it really depends on the sentences you are combining.
Answer: adding details to describe Raul’s behavior
Explanation:
The text mentions that Cara tried to remain calm in order to be able to see things from Raul's point of view yet Raul's behavior made that hard to do.
Carla should add details describing Raul's behavior so that the readers can know exactly what it was that Raul was doing that made it so hard for Carla to remain calm. This would paint a clearer picture of the situation to readers.
1.Expository
2. poetry
3. most famous drama
4. young adult fiction
5. choose which genre
6.used nonfiction
7.biography of her father
8.prose writing is boring
9. as he wrote his autobiography