Which form of communication heavily relies on visual actions, like gestures and facial expressions?

Non-verbal communication is the correct answer because it encompasses all forms of communication that do not involve spoken or written words. This includes body language, gestures, facial expressions, eye contact, posture, and even the physical distance between communicators. Non-verbal cues can convey emotions and attitudes, often providing context to verbal communication. For instance, a smile can indicate friendliness, while crossed arms may suggest defensiveness.

In contrast, assertive communication focuses on expressing thoughts and feelings confidently and respectfully but does not solely rely on visual actions. Written communication relies on text and symbols to convey meaning without any non-verbal elements. Oral communication, while it can include vocal tone and inflection, still primarily relies on spoken words rather than visual actions. Non-verbal communication is essential in enhancing interpersonal interactions and can often communicate more than verbal statements alone.