Ken is at a party with a group of friends. they ask her if she wants to have a beer and she refuses. one of her friends said, “if you don’t want to drink with us, why don’t you just leave? ” what type of peer pressure is being used in this scenario?

This is an example of spoken negative peer pressure. Ken doesn't want to drink but one of her friends clearly thinks that she should just leave if she doesn't want to participate in drinking and tells her so. This would either pressure Ken into doing something she doesn't want to do which is drinking as she doesn't want to feel left out or not fit in with her friends or she will be made to feel unwanted and will leave.