Caroline’s partner, jason, arrives home from work and asks her how her day was. she begins an exciting story and then suddenly stops talking, to create anticipation. her partner looks at her wide-eyed, nods repeatedly, and shakes his hand as if to say "…" jason’s nonverbal gesture is called a(n)
illustrator
self-adaptor
object-adaptor
regulator
affect display

Regulator

Explanation:

In non-verbal communication, regulators are gestures or cues which helps regulate conversation. In normal conversation, regulator determines head nodding, eye-behavior, turn-taking. and inflection. In this case, when Caroline stops at a particular juncture to enhance curiosity or generate suspense for making the anticipated story more interesting Jason uses regulator gesture. Jason's regulator is aimed at prompting Caroline to continue with her story since she no longer wishes to wait anymore. The question in the regulator shows the urgency of response from the narrator.

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