What is a disadvantage of using aggregate as a surfacing material?

The choice identifying the disadvantage of using aggregate as a surfacing material correctly points out that this type of material can allow for weed growth. Aggregate surfaces, such as gravel or crushed stone, often lack the compactness and solid structure of more engineered surfaces like asphalt or concrete. This means that there are plenty of gaps and spaces within the material where soil can accumulate, providing the ideal conditions for weeds to germinate and spread.

This characteristic may lead to increased maintenance requirements over time, as landscaping professionals or property owners may need to regularly remove weeds to maintain the surface's aesthetic and functional integrity. In contrast to this, options such as no maintenance, easy coloring, or full ADA compliance do not accurately reflect the challenges presented by aggregate surfacing and are not applicable disadvantages of using aggregate materials.