Which of the following is an example of a non-verbal communication facilitator?

Eye contact is the correct answer. It is a form of non-verbal communication that signals attention, sincerity and openness without any spoken word. In interpersonal communication, it is one of the strongest facilitators of trust, which is why interview boards and senior officers watch it closely.

• Yelling uses spoken words, so it is verbal, even though its volume is loud. It is a barrier to communication because it shuts down listening.
• Mumbling is a fault in verbal delivery. It reduces clarity, so it hinders communication rather than facilitating it.
• Jargon is specialised vocabulary. It is verbal and blocks understanding for listeners outside the field.

Core concept: communication has verbal channels (words) and non-verbal channels (eye contact, gestures, facial expression, posture). Paralanguage, such as tone and pace, sits between them. Mains angle: GS Paper IV on ethics in public communication, where a civil servant's non-verbal cues shape public trust.

Trap: aspirants pick yelling or mumbling because they describe how something is said, not what facilitates communication.