Final answer:
Agency admin, agency trafficker, and site trafficker are examples of user roles in advertising or digital marketing networks, associated with distinct responsibilities and permissions.
Step-by-step explanation:
Agency admin, agency trafficker, and site trafficker are examples of user roles within an advertising or digital marketing network. These are designations given to users of online advertising platforms that denote their permissions, responsibilities, and areas of activity.
An agency admin typically has high-level permissions to manage campaigns, access to reporting, and can control settings across the account.
An agency trafficker often is responsible for setting up and managing digital advertising campaigns, including configuring ad placements and targeting. A site trafficker, on the other hand, usually works directly on the publisher's side, managing the ads that are placed on a specific website or a group of sites.
Therefore, the correct option is 1) User roles.