Define interpersonal communication.

Interpersonal communication is fundamentally about the exchange of messages involving personal interaction between individuals. It emphasizes the one-on-one or small group settings where people engage directly with one another, allowing for nuanced, contextual, and relational communication. This type of communication is characterized by personal connection, emotional exchange, and feedback, enabling participants to respond to each other immediately and tailor their messages based on the interaction.

The other options do not capture the essence of interpersonal communication. Communication occurring only in groups typically refers to group communication dynamics, while organizational communication focuses on the flow of information within structured environments. Lastly, communication that is broadcasted widely pertains more to mass communication, where messages are disseminated to a large audience without individual interaction. Thus, option B accurately defines interpersonal communication by highlighting its focus on individual interactions.