The best way would be A,
Hope this helped!!
A to inform because it’s explaining some of what cheetahs do and how it’s known to people as the fastest mammal alive(informing you about cheetahs)
The answer to the question you presented above would be 'persuasive speech' or 'oral persuasion'. These are the terms that refer to a speaker's use of persuasive language to persuade an audience.
A third persons point of view is when a character is being introduced by their name for example "mark has no idea what you're talking about"
Is this guy serious or is it a joke?