Answer:
The main idea is the successful career that the science-fiction black writer Octavia Butler had and how she began.
Step-by-step explanation:
The text talks about Octavia Butler. It describes her beginnings and her successful career as a black female writer in the XX century. We can see this when the article mentions her education and how she did horrible jobs that allowed her free time to think about her characters. Also, the text in the last paragraph describes her most successful books.