In writing, what is a conclusion?

A central idea
The overall topic
Final thoughts about a topic
Supporting details

The correct answer is: Final thoughts about a topic.

A conclusion in writing is the closing part of an essay or other written work where the writer summarizes the main points, restates the thesis statement, and provides a final perspective or opinion on the topic. It is the last opportunity for the writer to leave a lasting impression on the reader and tie everything together.