Question

What is the primary evidence that forms the basis of seafloor spreading?

A.
The magnetic properties of rocks along the mid-oceanic ridges change alignment in a symmetrical manner.

B.
The rocks along the mid-oceanic ridges show age patterns in a symmetrical manner.

C.
The rocks along the mid-oceanic ridges have mineral patterns in a symmetrical manner.

D.
The rocks on the mid-oceanic ridges change densities in a symmetrical manner.