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when does volcanic eruption take a place?

a.when amount of energy released from the focus is felt on the ground.
b.when the part of the surfave of the earth lying of the top of focus is displaced.
c.when molten rock materials(magma) are expelled to earths surface due to high pressure.
d.when loosely packed water logged ssediments near of the ground surface lose their strength in response to strong ground shaking.​


Sagot :

Answer:

C. When molten rock materials(magma) are expelled to earths surface due to high pressure.