Final answer:
Composite volcanoes or stratovolcanoes are known for their abundant pyroclastic materials. They erupt explosively, emitting ash and tephra, in contrast to other volcano types that typically produce lava flows.
Step-by-step explanation:
Among the listed options, composite volcanoes, or stratovolcanoes, are primarily characterized by their composition of abundant pyroclastic materials. These volcanoes typically have explosive eruptions that emit large amounts of ash, tephra, and volcanic bombs, all of which are categorized as pyroclastic materials. Rhyolite domes, while consisting of highly viscous lava from felsic magma, do not predominantly consist of pyroclastic material. Basaltic shield volcanoes are characterized by fluid basaltic lava flows rather than pyroclastic material. Fissure-related flood basalts also mostly involve the flow of basaltic lava from cracks, not the explosion of pyroclastic material.