Which of the following is NOT an example of non-verbal communication?

Written communication is not an example of non-verbal communication because it involves the use of words and symbols to convey a message. Non-verbal communication refers to ways people express themselves without using spoken or written language. This includes facial expressions, which convey emotions; body movement, which can indicate attitudes or reactions; and personal space, which can signal comfort levels and social boundaries. In contrast, written communication relies on text to communicate ideas, making it a verbal form of communication rather than a non-verbal one.