Final answer:
Composite volcanoes are closely associated with convergent plate boundaries and subduction zones.
Step-by-step explanation:
The kind of volcano that is closely associated with convergent plate boundaries and subduction zones is called a composite volcano. Composite volcanoes, also known as stratovolcanoes, are formed by the eruption of sticky lava rich in silica content. These volcanoes are characterized by periodic eruptions that result in alternating layers of solidified lava, ash, and volcanic debris.
At convergent plate boundaries, the oceanic plate subducts beneath the continental plate or another oceanic plate. As the subducting plate descends into the mantle, it heats up and releases water and other volatile substances. This leads to the partial melting of the mantle above the subducting plate, forming magma. The magma then rises to the surface, resulting in the formation of composite volcanoes.
An example of a composite volcano formed at a subduction zone is Mount St. Helens in Washington state, USA.