Each paragraph must include an introduction as well as
three pieces of supporting evidence
at least one counterargument
a thesis statement

A thesis statement

Explanation: Every paragraph must include an introduction as well as a thesis statement. A thesis statement usually appears at the end of the introductory paragraph of a pAper and offers a summary of the main idea of a research paper or essay. A thesis statement is usually a sentence that explain the main point of an essay.

Therefore, every paragraph must have an idea or message its passing across, A thesis statement is the one sentence that will pass summarize the message of the paragraph to the reader.

(i can't select because there is no options but, i will answer) using evidence effectively. most of the assignments you will do in university will ask you to make an argument, to take a stance, or to prove a hypothesis. the best way to do this is to research the topic, develop a thesis statement, hypothesis, or claim and then use evidence to support this claim.