An example of a logos appeal in a persuasive might look like:

Answer:
Logos appeals to Logic.
Explanation:
If there is anything facts based in the text, the author is utilizing Logos. For example, graphs, statistics, or other facts.
The answer is C, it would be a fact since it's a reputable source.
B would not be fact based since it's an opinion.
A is also an observation, so it's not based purely on facts.