6.

Question

In what two plate tectonic settings do most volcanoes occur?

at divergent plate boundaries (ocean ridges or rifts) and at convergent plate boundaries at subduction zones

at divergent plate boundaries (ocean ridges or rifts) and within tectonic plates themselves

at convergent plate boundaries at subduction zones and on lowland plains

Answer 1

Most volcanoes occur:

at divergent plate boundaries (ocean ridges or rifts) and at convergent plate boundaries at subduction zones.

These are the two primary tectonic settings where volcanic activity is most prevalent. At divergent boundaries, magma rises to create new crust, while at subduction zones, one tectonic plate is forced under another, leading to melting and volcanic activity.