In your public speaking class, you are asked to evaluate the delivery of a classmate. You critique her vocal characteristics, eye contact, gestures, and appearance, but find that you can really only pay attention to one category at a time. Your experiences support what challenge of interpreting nonverbal messages?
Nonverbal cues are multichanneled

Nonverbal cues are multichanneled

Explanation:

Based on the scenario being described within the question it can be said that the reason for this is that Nonverbal cues are multichanneled. Meaning that these are all cues/gestures that can only be observed. Therefore you can only pay attention to one cue at a time, unlike speech where you can actually see the individual talking and listen to them.

answer; curiosity;

answer; empathy;