What is the purpose of the conclusion in an informative essay? to set up the topic and provide background
to develop the main topic with subtopics
to summarize and connect back to the thesis
to hook readers with a quotation or statistic

to summarize and connect back to the thesis

Explanation:

Its purpose is to refer back to the thesis, that is, to restate what was initially claimed by the author. A conclusion should never present new information, examples, or evidence, otherwise it would not be a conclusion at all, but merely an extension of the essay's body.

a. theta waves. this is because the person is in a light sleep which means the brain waves would show these kind of waves.

there was a king, priests, and peasants.