ANSWER:
Igneous, sedimentary and metamorphic rocks can all melt under right conditions.
EXPLANATION:
- High pressure and temperature are needed to melt these rocks. There are different ways in which rocks can melt.
- Conduction is one of the ways that causes rocks to melt. In conduction, heat transferred from one particle to another causes the rocks to melt.
- Volatiles driven melting can take place in the subduction zone where water and carbon dioxide can be used to melt the rocks.
- Decompression in the 'mid-ocean ridges' can also cause melting of rocks.