What is the recommended entry point for accessing an aircraft on a slope?

Accessing an aircraft on a slope should be done from the low slope to ensure safety and stability. When you enter from the low side, you minimize the risk of losing balance or falling, which could happen if you were to approach from the high side where the ground is elevated. Entering from the low slope allows for a more controlled and stable ascent to the aircraft, as well as reducing the chance of any objects being dislodged or causing a hazard. The other possibilities don't take advantage of this safety measure, which is crucial for working around aviation equipment.