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The factor that determines whether a volcanic eruption is going to be quiet or violent is the amount of the dissolved gases in the magma. Hence option A is correct.
The volcanic eruption are a product of a volcanic disaster that takes place when the lave and volcanic matter incident the ashes, dust, smoke, and magma are ejected firmly into the vent or the opening of the earth onto the surface.
The number of dissolved gases in the manager tells us the degree of explosive or the quiet type of eruption.
Find out more information about the volcanic eruption,
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