What environmental aspect can be improved by controlling windborne particles?

Controlling windborne particles significantly impacts atmospheric dust levels, making this choice the best answer. Wind erosion can mobilize soil particles and other debris into the air, leading to increased dust levels in the atmosphere. High concentrations of dust can affect air quality, visibility, and even human health.

When wind-driven particles are controlled, it results in reduced atmospheric dust, helping to maintain healthier air quality. This not only benefits human populations but also the ecosystems surrounding them, as excessive dust can interfere with photosynthesis in plants and negatively impact wildlife.

While other options like water quality, soil structure, and vegetation health can indeed be influenced by erosion and sediment control practices, the direct correlation with managing windborne particles specifically ties most closely to atmospheric dust levels. In controlling dust, the broader benefits to air quality and associated environmental aspects can be indirectly achieved as well.