In a classroom, a communicator’s trust level is determined by :

Concept

In face-to-face communication, non-verbal immediacy cues shape how a communicator is perceived.

Appropriate eye contact signals attention, openness, and interpersonal engagement, while credibility is strengthened when verbal and non-verbal behaviour are consistent.

Application

In a classroom, eye contact gives the communicator a direct visual connection with learners. It conveys attentiveness and confidence and helps the communicator observe whether learners are engaged.

Contrast

• The use of hyperbole is a verbal rhetorical device that heightens emphasis through deliberate exaggeration.

• A change in voice level is a paralinguistic variation that changes emphasis through loudness or pitch.

• Abstract concepts are content-level ideas that express general meanings rather than concrete instances.

• Eye contact is a visual non-verbal cue that manages attention and interpersonal engagement.

Cross-check

Even without changing the words or the voice, appropriate eye contact can communicate attentiveness. This confirms that the relevant trust-related cue here is eye contact.

Therefore, the answer is eye contact.