The communication structure described in the situation is a "circle network." In a circle network, communication flows among group members equally. Each member has the opportunity to contribute, share ideas, raise concerns, and suggest solutions. This type of communication structure is characterized by its collaborative nature, where all individuals can participate in the dialogue, share feedback, and contribute to decision-making processes. In the context of Jack and his team of fitness instructors, the circle network is demonstrated through their weekly meetings. During these sessions, team members discuss customer concerns, suggest solutions, and propose future improvements collaboratively. This open, participative style ensures that everyone in the group can express their thoughts and ideas, promoting a democratic and inclusive decision-making environment