Volcanism is the process of transferring molten material from one location in the earth's crust to another, going to result in landforms of great elevation.
The explosion of molten rock from within the Earth to the surface is known as volcanism.
Volcanism is caused by the Earth's internal heat and is associated with tectonic activity as well as being a part of the rock cycle. Volcanic eruptions happen when molten lava reaches the Earth's surface.
Thus, the correct option is 5.2.
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