Which process of communication is best for controlling noise in a classroom?

Remaining calm and simply looking at the students uses non-verbal communication that quietens the noise without confrontation.

Saying do not talk is a verbal command that often provokes rather than settles a class.

Raising one's voice above the students competes with the noise and worsens it.

Continuing to teach amid the noise ignores the problem and loses the class.

Eye contact and gestures are powerful forms of non-verbal communication.

A teacher's silence and steady gaze can convey expectation more effectively than words.