The correct order of events that describes the processes for magma to become sand is:
heating, cooling, erosion
Here's a brief explanation of the processes:
- Heating: Magma from the Earth's interior is heated.
- Cooling: When magma reaches the surface or near-surface and cools, it solidifies into igneous rock.
- Erosion: Over time, weathering and erosion break down the igneous rock into smaller particles, including sand.
So the best choice among your options is "heating, cooling, erosion."