Answer: A. It contains fewer volatile gases
Explanation:The mafic lava is a lava type that has low viscosity. The reason for that is its composition, being very rich in magnesium and iron. Because this type of lava is low in viscosity, it is unable to contain the majority of the gases and water in it, as they find it relatively easy to ''escape'' from it. That results in much calmer eruptions of the volcanoes that produce mafic magma, with explosions almost never occurring, and even if they do they are very small.
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