Answer: customer
Step-by-step explanation:
From the question, we are informed that Trident Sports Inc. produces and then distributes athletic wear, sporting equipment, and protective sports gear worldwide and that they are departmentalized based on products sold to professional athletes, products sold to people who pursue sports only for leisure, and products sold to sports teams.
This shows that the approach to departmentalization that the company follow is the customer approach. This can be seen in the way that the company is departmentalized.