Which material most likely has the highest level of permeability? a. sand b. clay c. gravel d. silt

Silt

Explanation:

Permeability is what allows liquids or gasses to flow through or pas through a material.

Silk has the highest level of permeability, causing gasses and liquids to easily flow through it.

Sand, clay and gravel do not have high levels of permeability. That is why these substances are used to filter water. They do not allow liquids or gasses to easily flow through them, causing them to loose any dirt or physical sustenance.

Mordancy.