When sam got up to give his speech in public speaking class, he walked around the audience, high-fiving his classmates, and began his speech by saying, "hey! what up, dawgs? " what difference between conversation and public speaking did sam violate?

he used informal langauge, slang .public speaking is formal and the used of slang or informal langauge is inappropriate.

Explanation: Informal language can only be used amongst peers but when it comes to public speaking a formal langauge has to be used .

It start from greeting people one can not casually do so as he did when he said whar up; that is a language that he can only use when it id just him and his friends .

it limits peoples’ voting options. hope it : )