What is a common cause of parachute malfunction?

The correct choice regarding a common cause of parachute malfunction is related to broken lines. Parachutes are designed to deploy and function properly, relying on the integrity of their components, including the suspension lines. If any of these lines are broken, it can severely impact the stability and control of the parachute during descent. A malfunction due to broken lines may result in the parachute not deploying fully or at all, leading to dangerous situations for the jumper.

While other factors like improper packing and excessive weight may contribute to parachute malfunctions, broken lines present a direct and critical failure of the parachute’s structural integrity that can lead to immediate and severe issues during a jump. Weather conditions can also affect parachute performance; however, typically those impacts are more about control rather than a fundamental malfunction as would be caused by broken lines. Thus, the integrity of the suspension lines is paramount for safe parachuting, making it a significant cause for malfunctions.