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Which outcome is enhanced along subduction zones by water introduction?

A)Magma generation triggering explosive volcanism
B)Crustal thickening inhibiting magma ascent
C)Isostatic rebound causing reduced melting
D)Trench formation decreasing vent explosivity

💡 Explanation

Magma generation increases during subduction because the **lowering of the mantle's melting point** occurs with the introduction of water from the subducting plate; therefore explosive volcanism appears rather than purely effusive, if water is not introduced.

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