Question

the nazca plate is being subducted beneath the continental south american plate. which type of plate boundary is this?
a. continental-oceanic convergent
b. ocean-continental convergent
c. divergent
d. strike-slip
e. transform

Explanation:

The Nazca plate is an oceanic plate, and the South American plate is a continental plate. At a convergent boundary where an oceanic plate and a continental plate meet, the oceanic plate (Nazca) subducts beneath the continental plate (South American) because oceanic crust is denser. So the boundary type is Oceanic - Continental Convergent, which corresponds to option B.

Answer:

B. OCEAN - OCEANIC - CONTINENTAL CONVERGENT (Note: Likely a typo in option text, should be "Oceanic - Continental Convergent" but following the given option as is)