Which component provides structural support for the parachute during descent?

The riser assembly is the component that provides structural support for the parachute during descent. It connects the parachute canopy to the harness worn by the jumper. The risers are designed to distribute the load of the canopy and the jumper evenly, ensuring that the parachute remains stable and maintains its shape during the entire descent.

Throughout the descent, the riser assembly allows for the transfer of forces between the canopy and the jumper. This is crucial for maintaining control and stability, especially when making adjustments during the parachute's flight path. The design and materials used in the riser assembly are specifically engineered to withstand the stresses of freefall and canopy flight, contributing to the overall performance and safety of the parachute system.

Other components, such as the deployment bag, pack tray, and slider, serve different purposes. The deployment bag is used to contain the parachute canopy until deployment; the pack tray provides a platform for packing the parachute; and the slider helps to slow down the opening of the parachute, reducing the shock experienced by the jumper. While these components are essential to the parachute's function, they do not serve the primary role of providing structural support during descent, which is the role of the riser assembly.