How does seafloor spreading occur? A. By the amount of residual magnetism in a rock sample
B. By the dense oceanic lithosphere that plunge beneath less dense continental
C. From a line along the lithospheric plates that moves past each other
D. Earth persistent magnetic field
E. By the release of magma from the mantle onto the mid-ocean ridge

E. By the release of magma

Explanation:

When the magma leaves the underwater vents, it hardens and spreads making the seafloor bigger.

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the correct answer is c

the precambrian aged rocks could be found in australia. australia is a region that has a lot of ancient civilization history from million years ago. in this region, there are a lot of recognizable fossils buried in its land which is considered a precambrian-aged rocks