Answer:
Mid oceanic ridge
Explanation:
The plate boundary between the African and South American plate is most likely a mid - oceanic ridge.
This because the margin is a divergent margin as the motion of the two plates in this region is opposite one another.
The African plate is moving away from the South American plate.
- As plates moves apart, mantle materials begins to upwell.
- Then they coalesce along margin edges and push back the plates around them.
- This builds up series of ridges which is a very prominent underwater feature.
- The mid-oceanic ridge is very rich in basalt.
