Final answer:
Nonverbal communication includes facial expressions which are a significant aspect of body language. It is integral in conveying emotions and social cues, often accompanying verbal communication to provide additional context. Options B, C, and D are not considered nonverbal since they rely on language and written text.
Step-by-step explanation:
Nonverbal communication includes a variety of behaviors and actions that are not based on verbal language. Among the options provided, A. Facial expressions are a key part of nonverbal communication. Other forms of nonverbal communication can include body language, gestures, paralanguage (tone and accent), and even silence itself. Nonverbal communication can convey messages about emotions, intent, and social cues and often accompanies verbal communication to provide a fuller context to the spoken words.
For example, smiles often indicate joy or approval, and in the workplace, it can create a positive impression. Similarly, a firm handshake can convey confidence, while crossed arms might suggest a defensive or closed-off stance. It is important to note that these signals can vary across different cultures, making nonverbal communication complex and culturally dependent.
Nonverbal communication is not only important in face-to-face interactions but also plays a role in digital communication through the use of emojis, reaction gifs, and the like. However, options B, C, and D, which refer to verbal, written, and digital communication, respectively, fall outside the definition of nonverbal communication.