When operating an excavator on a sloped surface, which action is most likely to compromise the equipment's stability and potentially lead to a rollover?

Question: When operating an excavator on a sloped surface, which action is most likely to compromise the equipment's stability and potentially lead to a rollover?

Answer options:

• Lowering the boom and bucket closer to the ground.
• Operating perpendicular to the slope while moving. ✅ Swinging a heavy load downhill while travelling across a severe side slope.
• Keeping the tracks aligned with the direction of travel up the slope.

Correct answer: Swinging a heavy load downhill while travelling across a severe side slope.

Explanation: Swinging a heavy load downhill on a side slope significantly shifts the centre of gravity and can drastically reduce the machine's stability, increasing the risk of a rollover, as highlighted in operator safety guidelines.