Which of the following are examples of oceanic-continental plate convergence boundaries?

Oceanic-continental plate convergence boundaries occur where an oceanic plate moves towards a continental plate. In these scenarios, the denser oceanic plate is forced beneath the lighter continental plate in a process known as subduction. This interaction is responsible for the formation of various geological features, including volcanic arcs.

Southern British Columbia is home to the Cascade Range, which is a prime example of volcanic activity resulting from an oceanic-continental convergence. As the Juan de Fuca Plate (oceanic) subducts beneath the North American Plate (continental), it creates conditions conducive to volcanic activity and mountain building, leading to the formation of volcanoes in that region.

The other options, such as mid-ocean ridges, mountain ranges in Asia, and flat plains in Africa, do not represent oceanic-continental convergence. Mid-ocean ridges form primarily due to oceanic-oceanic divergence, where new oceanic crust is generated. Mountain ranges in Asia are often the result of continental-continental convergence rather than oceanic-continental processes. Flat plains in Africa do not illustrate the dynamic interactions of tectonic plates typical of oceanic-continental boundaries. This context solidifies why the chosen answer accurately represents an example of oceanic-continental plate convergence