How does heat flowing through Earth's layers contribute to the formation of an ocean basin?

Moreover, the way that this works is that convection currents in the mantle  causes tectonic plates to move when material near the Earth's core rises, and colder mantle rock sinks. Hot magma wells up at the ridges, forming new ocean crust and shoving the plates apart.

Explanation:

answer; i believe the correct answer is (replication is not conservative);