Respuesta :

Messages that let the speaker know you're paying attention. "I see", "Uh-Huh", or "Okay".

This was my answer for the topic test. hope it helps.

Answer: Back-channel cues are vocalized, reactive responses used to signal understanding, agreement, contradiction or empathy. Examples will vary but can include: Uh-huh, oh!, huh, hmmmm, shhh...

Explanation: