Which nonverbal cue symbolizes "no"?

The correct answer symbolizes "no" through a clear and recognizable gesture. Holding up a hand, often with the palm facing outward, is commonly interpreted as a signal to stop or indicate refusal in various cultures. This nonverbal cue effectively communicates boundaries and the desire to halt a conversation or action.

In contrast, shaking the head also signifies "no," but it aligns more closely with a common gesture specifically indicating disapproval or negation rather than simply stopping or refusing. Nodding the head universally conveys agreement or affirmation, while crossing arms typically conveys defensiveness or resistance rather than a straightforward "no." Hence, holding up a hand stands out as a strong symbol of refusal or negation in nonverbal communication.