which of the following is true about impervious building materials? a. impervious surfaces prevent…

which of the following is true about impervious building materials? a. impervious surfaces prevent pollutants from entering the water supply. b. vegetation and gravel are common impervious materials. c. having fewer impervious surfaces improves water drainage. d. all of the above please select the best answer from the choices provided

which of the following is true about impervious building materials? a. impervious surfaces prevent pollutants from entering the water supply. b. vegetation and gravel are common impervious materials. c. having fewer impervious surfaces improves water drainage. d. all of the above please select the best answer from the choices provided

Answer

Brief Explanations:

  • Option a: Impervious surfaces can actually trap pollutants and prevent them from being filtered as water infiltrates the ground, but they don't prevent pollutants from entering the water - supply when runoff occurs, so this is false.
  • Option b: Vegetation and gravel are permeable materials, not impervious, so this is false.
  • Option c: Fewer impervious surfaces mean more areas for water to infiltrate the ground, which improves water - drainage. This is true.

Answer:

C. Having fewer impervious surfaces improves water drainage.