Why does permeable rock weather more quickly?

Question

Water enters permeable rock and dilutes the minerals that exist within the rock.
Water enters permeable rocks, creating colder temperatures in the rocks, which causes them to weather faster.
Permeable rocks heat up faster due to the many spaces between their minerals, enabling the conduction of heat more rapidly.
Permeable rocks have more spaces in them, which enables water to penetrate and increase the rate of weathering.

Answer 1

The increased water content in the rock also increases the rate of chemical weathering, which breaks down the minerals in the rock.