Your sister is on a strict diet, but you are trying to persuade her to try one of your freshly baked cookies

What rhetorical device do you use?

Ethos: Dieticians say taking a break from a diet can increase the chances of it working

Pathos: I would feel horrible if you didn't give your opinion on them.

Logos: Statistics show that when you take breaks from a diet it is more effective.

Well, I guess it would be okay to give her one after a whole day of her not eating junk food.