Well, sport personalities are usually admired by a lot of people for their fame and talent and money. However, some people on the media may make up things or spread rumors about them, especially if they don't like a certain team they are playing on. This influences people because they sometimes want to achieve their goals or are inspired by something they do. However, how someone influences a person is entirely based upon that person.
Hello!
The correct answer is C. "People who support animal testing are crazy."
This is an example of an ad hominem fallacy because the thesis states that animal testing is valuable, which insinuates that the person making the claim believes in animal testing. By claiming that "people who support animal testing are crazy" is making a statement about the person himself rather than about the argument. The sentence is stating that the person who supports animal testing is crazy rather than explaining a counter-argument about the topic.
I hope this helps you! Have a lovely day!
- Mal