How does heavy clay soil behave under foot traffic?

Heavy clay soil is known for its high density and low permeability, meaning it holds water and is not easily penetrated. When subjected to foot traffic, this type of soil tends to become more compacted. The weight and pressure from footsteps cause the soil particles to become densely packed together, reducing the space between them. This increased compaction can lead to further drainage issues, as the compacted soil does not allow water to percolate through as easily.

In contrast, options like remaining loose, enhancing drainage, or promoting root growth are not characteristic of clay soils under foot traffic. Loose soil would not generate the compaction effect seen in clay, while enhancing drainage contradicts the properties of clay, which typically leads to poor drainage when compacted. Additionally, heavy compaction can actually inhibit root growth due to the restricted access to air and moisture that roots need to thrive. So, the behavior of heavy clay soil under foot traffic is primarily one of increased compaction.