Which component of a fall arrest system helps connect the harness to the anchorage?

The correct component that connects the harness to the anchorage in a fall arrest system is the connector. Connectors are critical elements designed to link different components of a fall protection system, such as attaching the full-body harness to a secure anchor point. They often include components like carabiners or snap hooks that allow for secure and reliable connections while providing ease of use.

In the context of fall protection, having a strong and reliable connector is essential for maintaining safety. The connector must meet specific standards and be appropriate for the application to ensure it can withstand the forces that may be experienced during a fall.

The other options do not serve this purpose. A scaffold is a temporary structure used to support a work crew and materials, a full-body harness is the wearable part of the system that distributes fall impacts across the body's torso, and a toe board is a safety feature for preventing tools and materials from falling off elevated surfaces but does not connect anything in a fall arrest system.