What best describes the purpose of a conclusion in an essay?

The purpose of a conclusion in an essay is to summarize the main points and reinforce the thesis. A conclusion serves as the final section of the essay where the writer synthesizes the information presented, restates the thesis in light of the evidence discussed, and emphasizes the overall argument. This reinforces the central message for the reader and provides closure to the essay. A well-crafted conclusion brings together the various strands of the argument, ensuring that the reader is left with a clear understanding of the main ideas and their significance.

Introducing new ideas or arguments, suggesting future research, and listing references do not align with the primary function of a conclusion. Such tasks belong to different sections of the essay or additional documentation rather than summarizing and reinforcing the established points made in the body of the text.