Question

Which non-verbal communication is mostly expressed by a steady gaze at the source of offence, frowning, scowling or a clenching of teeth​

Answer 1

Answer:

Although the expression of anger varies from person to person, it is commonly expressed by a steady gaze at the subject of offence, frowning and scowling, or a clenching of the teeth. In some persons, their posture gets tense as if ready to spring into immediate offensive action.

Answer 2

Answer:

I believe it is facial expressions