What type of metamorphism occurs due to contact with molten rock?

Contact metamorphism occurs when rocks are heated by the intrusion of molten rock, such as magma or lava. This type of metamorphism happens in localized areas around the molten rock, creating a high-temperature environment that can cause changes in the mineral composition and texture of the surrounding rocks. The heat from the molten rock alters the existing rocks without the influence of pressure or tectonic forces, which distinguishes contact metamorphism from other types.

In contrast, regional metamorphism is typically associated with large-scale tectonic processes where both temperature and pressure change over broad areas, usually related to mountain building. Dynamic metamorphism, on the other hand, is primarily driven by mechanical deformation due to tectonic movements. Hydrothermal metamorphism involves the interaction of rocks with hot, chemically active fluids but does not specifically refer to contact with molten rock like contact metamorphism does.

Thus, the definition and characteristics of contact metamorphism align accurately with the process described in the question, making it the correct answer.