Final answer:
To capture a manager's relationship with users in an application, a hierarchical relationship should be used, as it aligns with the way organizational structures work, where each employee reports to only one manager and can easily be visualized as a tree structure.
Step-by-step explanation:
To capture a user's manager on each user record in the application, the appropriate relationship type to use would be a hierarchical relationship. This type of relationship allows you to create direct links between a record and a single parent record in the same object. For example, in the case of users and managers, since each user can have only one manager, and each manager can oversee several users, this creates a hierarchy of users which is best represented through a hierarchical relationship.
In computer systems, hierarchical relationships are often visualized as a tree structure where each node (user) is connected to a single parent node (manager), with the top-level node being the highest-ranking manager. This representation aligns well with typical organizational structures in businesses where each employee reports to a single manager.