Which statement correctly defines porosity and permeability?

Which statement correctly defines porosity and permeability?

• A. Porosity is the amount of weight water adds to a rock.
• B. Permeability is the percentage of void space in a rock.
• C. Porosity describes the ease with which water moves through a rock.
• D. Porosity is the percentage of void space, and permeability is the ease of water flow through the material.

Answer: (D)