Answer:
My notes say it A: Younger rocks are closer to mid-ocean ridges.
Step-by-step explanation:
This was discovered in the 1960's And proves that the new rock formed is pushing the sea floor.
My notes:
In the 1960s, scientists discovered that the mid-ocean ridges were a source of new crust material.
They went deep under sea and down to the mid-ocean ridge in a submarine called Alvin.
Mk I just did the test on Edge 2020 and got it right along with all the other answers so I got a 100%.
Your welcome