4. How can Earth's plates move? A. Slide past each other and separate from each other B. Collide towards each other or slide past each other C. Collide, slide past each other, or separate from each other D. None of the above

The correct answer is C. Earth's plates can move in three main ways: collide towards each other, slide past each other, or separate from each other. These movements are driven by the forces generated by the heat and energy within the Earth's interior.