Question

scientist discovered that rock layers were ____ the further away from the mid ocean ridge. older younger

Explanation:

In the context of mid - ocean ridges and plate tectonics, new oceanic crust is formed at the mid - ocean ridge (through seafloor spreading). As the crust moves away from the ridge, it has more time to accumulate age. So rock layers further away from the mid - ocean ridge are older.

Answer:

A. older