When maneuvering around obstacles, what should the operator pay particular attention to?

When maneuvering around obstacles, it is crucial for the operator to pay particular attention to the position of the dumper's rear end. This is because the rear end of the dumper can swing out during turns, which can create a hazard not only for the dumper itself but also for any surrounding personnel or equipment. Understanding the dimensions and the turning radius of the dumper helps in preventing collisions with obstacles and ensuring a safe working environment.

In contrast, while the other options might have relevance in different contexts, they do not hold the same level of importance during the specific task of maneuvering around obstacles. For example, the position of the engine is less critical since it typically does not affect the immediate navigation of the dumper around obstacles. The weight of the load can impact stability but is not directly related to maneuvering around obstacles in most operational scenarios. The sound of the engine could indicate issues but does not directly inform the operator about spatial constraints while navigating obstacles.