Which of the following is a purpose of interpersonal communication that involves the desire to impact others?

The purpose of interpersonal communication that involves the desire to impact others is best captured by the concept of "influence." This aspect of communication aims not just to exchange information but to persuade or motivate others to think, feel, or act in a certain way.

Influence is foundational in many contexts, especially in leadership and team dynamics where officers must inspire their team members, advocate for strategies, or drive behavioral changes during emergency situations. Successful communication that influences can also foster collaboration and strengthen relationships, making it a vital skill for effective leadership within fire and emergency services.

While helping, learning, and playing are important aspects of communication, they do not specifically focus on the intent to impact others in a more persuasive or motivating way, as influence does. Therefore, influence stands out as the most relevant choice in the context of wanting to create a specific effect on others through communication.