Final answer:
Extrusive igneous rock forms most often near an active volcano.
Step-by-step explanation:
The type of rock that forms most often near an active volcano is extrusive igneous rock. This type of rock is formed when magma erupts onto the Earth's surface through volcanic activity and cools quickly, resulting in fine-grained or glassy textures. Examples of extrusive igneous rocks that form near volcanoes include basalt, andesite, and rhyolite.
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