How can you tell if the RSL is routed correctly?

The correct choice emphasizes the importance of tracing the path of the RSL (Reserve Static Line) from the snap shackle to the guide ring. This method ensures that the RSL is not only properly attached but also routed in a manner that allows it to function as intended. A correct routing allows for the reserve parachute to deploy correctly in the event of a main parachute failure, which is critical for safety.

Visually inspecting just the snap shackle does not provide a complete verification of the RSL's routing. It might appear secure, but without confirming its entire path, you cannot guarantee that it will deploy properly. Observing the RSL during freefall for tangling may be helpful but does not assure correctness before jumping. It is possible for an RSL to look fine before the jump but still be incorrectly routed. Lastly, ensuring that the RSL is not connected to the deployment bag, while an important safety check, does not confirm that the line follows the correct path to deploy the reserve safely. Hence, the most reliable method to ensure the RSL is routed correctly is by checking the entire path from the snap shackle to the guide ring.