What is an example of body language?

Body language primarily refers to non-verbal forms of communication that convey messages and emotions, and facial expressions are a key component of this. They can express feelings such as happiness, sadness, anger, and confusion, often conveying more than verbal communication alone. For instance, a smile can indicate friendliness or approachability, while a frown might suggest displeasure or disapproval.

The other options represent different forms of communication or identity. A tone of voice, while important in conveying an emotional undertone, is still a verbal cue rather than a non-verbal one. Written communication, on the other hand, is a clear form of verbal expressiveness using text. Gender identity is a personal and social construct related to how individuals perceive themselves in relation to gender roles, but it does not constitute a form of body language. Thus, facial expressions stand out as the most accurate example of body language in this context.