Which of the following practices is an example of erosion control BMP?

Covering stockpiles is an effective erosion control best management practice (BMP) because it prevents soil particles from being dislodged and carried away by wind or rain. Stockpiles of soil and other materials can be susceptible to erosion if left uncovered, especially during heavy precipitation. By covering them with tarps or similar materials, this practice minimizes the direct impact of raindrops on the surface of the soil, reduces the potential for runoff, and protects the integrity of the stockpiles.

Other choices, while they may relate to erosion or sediment control in different contexts, do not serve as effective BMPs for erosion control. Planting tall trees can help with long-term stability and canopy cover, but they do not directly address immediate erosion issues that may arise from uncovered stockpiles. Scheduling grading during rainy periods is counterproductive as it can exacerbate erosion due to increased water flow and instability. Increasing soil disturbance is generally detrimental to erosion control, as it exposes more soil surface to the elements, which can lead to increased erosion rather than mitigating it.