How is a nose down attitude achieved during helicopter loading?

A nose down attitude during helicopter loading is primarily achieved by having a proper Link count. The Link count refers to the number of links in the sling assembly that connect the cargo to the helicopter. This is crucial because it determines the angle at which the load hangs from the helicopter's cargo hook.

When the Link count is configured correctly, it influences the center of gravity of the load during transport, thereby allowing the helicopter to maintain the desired nose down attitude. This is particularly important for ensuring that the load is stable during flight and that the helicopter can operate safely while maneuvering.

Other options, while related to cargo handling, do not directly control the nose attitude in the same manner. Adjusting cargo weight can affect stability but does not guarantee the correct nose position without the proper Link count. Altering the sling length and changing the cargo hook position also relate to load handling, but they do not specifically address the aerodynamic and stability requirements necessary to achieve a consistent nose down attitude during loading operations. Thus, the correct answer highlights the importance of Link count in this context.