What is one primary purpose of using an accessory cord in rigging?

The primary purpose of using an accessory cord in rigging is to handle lighter, less critical loads. Accessory cords, often smaller in diameter and designed for specific applications, allow for the management of equipment or lighter loads that do not require the strength of larger ropes. This can include tasks like securing gear or creating anchors for items that are not weight-bearing or do not contribute significantly to the overall load being managed.

In contrast, other options address different aspects of rigging techniques and safety. Preventing rope entanglement is a general good practice with any rope setup and is not the specific purpose of using an accessory cord. Providing extra protection in case of a fall typically refers to the use of safety gear rather than accessory cords themselves. Connecting multiple systems together can be an application of accessory cords, but it is not their primary purpose, as accessory cords are better suited for tasks involving lighter loads rather than for connecting multiple heavy systems. Thus, using an accessory cord primarily facilitates handling tasks that do not require heavy-duty solutions.