After Evaâs speech about the harmful effects of not recycling, you noticed that she discarded her empty water bottle in the nearest trashcan. Which ethical principle has Eva violated?

Answer:Practising what you preach

Explanation:When you tell people or try to persuade them towards the change it is always crucial that you also act as a model of that change otherwise if your actions contradict with what you say it is hard for people to actual take you serious or to adopt that change.

All Evaas work will be in vain after what she did after the presentation because she did the opposite of what she was preaching to the audience.