Why is sedimentary rock the most easily weathered rock?

Weathering (breaking down rock) and erosion (transporting rock material) at or near the earth's surface breaks down rocks into small and smaller pieces. These smaller pieces of rock (such as sand, silt, or mud) can be deposited as sediments that, after hardening, or lithifying, become sedimentary rocks.

most community's take hundreds of years to become stable

i think the answer is g1

hope i

-lavira: )