Baseball is not a popular activity in China
Answer: The tu quoque fallacy
Explanation:
The fallacy that's illustrated by the statement "The customers should be more polite." is the tu quoque fallacy.
The tu quoque fallacy occurs when an invalid attempt is made by a person while responding to criticism. From the question, we can infer that the person accused the customer while responding to the customer's rude behaviour. This is an example of the tu quoque fallacy. It is when a person discredits the argument of others
The central idea is what the main thing. For this, I think the central idea is simply Cactuses.
I'm not sure what another supporting detail can be, but if there's a back side, or another page about cactuses, I can sure help! But if that's the only side, ask your parents. xD