What conveys emotion clearly through non-verbal means?

Facial expression is a powerful tool for conveying emotion without the need for words. It can express a wide range of feelings such as joy, sadness, anger, surprise, and more, all through subtle changes in the face, including the eyes, mouth, and brow movements. In drama, actors use their facial expressions to communicate their character's internal state and to create an emotional connection with the audience.

While vocal tone can enhance emotion, it relies on sound rather than visual cues. Stage directions provide guidance on movement and positioning but do not directly convey emotion in the same way facial expressions do. Lighting design can set the mood and atmosphere, influencing how emotions are perceived, but it does not convey emotion itself without the presence of actors' performances. The direct link between facial expressions and immediate emotional response makes this choice the most effective in clearly conveying emotions non-verbally.