I reread your paragraph, the thing your reading, and I think it makes the most sense! If i'm wrong then I'm sorry but I made sure and sure enough I still got D as the best answer!
The central idea is the same as the main idea. Most of the time, the main idea is mentioned in the Title. Without reading the essay, I do not know what the central/main idea is.
I was just trying to look for the answer but it’s easy once you read it. In the article the only matching answer is D because it states it, hope that helped
