HELP ME

Rocks are classified as abiotic, which means they are not living or have never lived before. How do we know that rocks are non-living?

(a) Rocks aren't needed by humans to survive, therefore they are not alive.
(b) Rocks don't break down, therefore they cannot be alive.
(c) Rocks don't move, and all living things move
(d) Rocks do not have cells, and all living things are made up of at least one cell.