Which statement is correct about the movement of plates that sit on top of the mantle?
O They regularly move because of the convection currents of magma.
O They never move because they are connected to mountains.
O They regularly move because of the convection currents of oceans.
O They never move because they are connected to Earth's crust.

It is due to the convection of the lithosphere and asthenosphere, the movement of plates occurs relatively to each other at different rates from 2-15cm/year.

Explanation:

The earth’s rigid outer layer called the lithosphere is broken into twelve large pieces called plates, which lie on the top of a molten layer of rock called the asthenosphere.
These plates present in the planet’s surface tend to move due to extreme heat in the earth’s core that makes the molten rock in the mantle layer move in a pattern called a convection cell.

Thus option A is correct.

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