Vocalizations like "uh huh," "oh," and "umm" that encourage others to continue speaking or indicate that we would like to speak are called

Vocalizations like "uh huh," "oh," and "umm" that encourage others to continue speaking or indicate that we would like to speak are called Back-channel cues.

answer; /// all of the above;

answer; ///attempts to change more than once behavior at the same time;