Answer:
a. organizational structure
Explanation:
Based on the information provided within the question it can be said that Richard was telling Brescia about the store's organizational structure. This term refers to how everything within a store, such as tasks, coordination, and supervision are structured to best achieve the organizations goals. Which in this scenario the "chain of command" type of system that they have in place is meant to do just that and promote efficiency in order to achieve company goals.