Ethics is the branch of philosophy in which we conduct ourself to behavioral norms. When someone is delivering a speech it’s ethical to listen and not be disruptive. This can involve playing with a cell phone, chewing gum, or generally being disruptive. As public speakers, we must engage in behaving in ways that are ethical to others. Also, image is a key element to ethics. When you deliver a speech or engage in an important business meeting, always wear professional attire.