What feature of the dumper helps with traction on uneven ground?

The feature that enhances traction on uneven ground is the wide, rugged tires designed specifically for off-road conditions. These tires provide a larger surface area that distributes weight more evenly across the ground, helping to prevent the dumper from sinking into softer terrains such as mud or loose soil. Their rugged design includes deep treads that grip the surface, allowing for better control and stability when operating on varied landscapes. This design is essential for ensuring that the dumper maintains traction, especially in challenging environments where slipping and loss of control might occur.

While options that reference a four-wheel drive system and lightweight construction do contribute to performance and maneuverability, the specific capability to improve traction in uneven terrain primarily stems from the tires' design and structure. Narrow, smooth tires, on the other hand, would not provide the necessary grip for off-road conditions, making them unsuitable for such environments.