Answer:
Examples
Explanation:
If you want to support a claim, using specific examples that might persuade the reader into siding with your claim is a good tactic. Exclamation marks are not necessarily effective, and headings are made so that readers can get an idea of what they're about to read, not the details of it. Additionally, footnotes are additional pieces of information, however, if you truly want to support and persuade someone into believing your claim you should keep that within the main body of text.
