a material that has high porosity and high permeability a material that has high porosity and low permeability a material that has low porosity and high permeability a material that has low porosity and low permeability
I gave my students this multiple choice question: The empty spaces in a material are called pores. Porosity is the amount of empty space within a material. Permeability describes how well the pores in a material are connected. Which of these materials would make the most effective aquifer?

Only one answer is correct among these 4 choices:
- a material that has high porosity and high permeability
- a material that has high porosity and low permeability
- a material that has low porosity and high permeability
- a material that has low porosity and low permeability

Could you tell me which one is correct?

a material that has high porosity and high permeability