When dealing with an argumentative student, it's important to remain respectful and refrain from being sarcastic. Don't make idle threats that could fracture your relationship with your student.
Transcript:
In instances where I’ve had a student who it’s clear doesn't respect me the first and foremost thing I have to do is maintain that I respect them. Never treating them with sarcasm, never treating them with with a lack of respect because that will just promote that their behavior is correct and of course I don't respect them and why should they respect me. So making sure in that to never ever give sarcastic idle threats and to try to kind of push them and manipulate them but always remember to treat them as an actual person.