Jenna has been telling her friends about how successful she was at losing 10 pounds by using a dietary supplement she purchased at a health food store. This is an example of .

Anecdotal evidence

Explanation:

Anecdotal evidence involves gathering of information or evidences in an information. It relies on what people say without doing due intelligence to test the authenticity of the claim.

Jenna telling her friends about how successful she was at losing 10 pounds by using a dietary supplement she purchased at a health food store is an example and there are no evidences to support this.

try something like republic or democracy joined or something because its talking about a election party.