Cargo on a motorcycle should be:

Cargo on a motorcycle should be fastened and secured as low as possible on the motorcycle to enhance stability and control while riding. When the load is positioned lower, it lowers the center of gravity, which helps in maintaining balance, especially during turns and when navigating uneven surfaces. This positioning also minimizes the risk of shifting while riding, which can lead to loss of control.

Additionally, securing the cargo low helps to prevent any adverse aerodynamic effects that could arise if the cargo were placed higher, which might disrupt airflow and affect handling. Always ensuring that the cargo is well-balanced and does not interfere with the operation of the motorcycle is crucial for safety.

The other options suggest placing cargo in positions that could compromise stability, control, and safety while riding, which is why the focus should be on securing it as low as possible on the motorcycle.