C. A clause is a group of related words, but a phrase is Not.
We need the article to answer that -.-
Answer:
Turn-yielding (cue).
Explanation:
Turn-yielding cues relinquish control of the conversation. We might look at the listener more steadily or remain silent for a noticeable period to indicate that we are finished making a point. Turn-maintaining and turn-yielding may also be expressed explicitly. It's a conversational turn.