What landform do you want after a large stratovolcano erodes away, leaving behind an intrusive igenous magma body exposed at the surface

volcanic neck

Explanation:

The volcanic neck is formed when lava solidifies inside the volcano. just the same way clay or cement solidifies inside a mold.

When the large external surface of the volcano erodes away, the volcanic neck will be left standing because it is a harder rock that the volcanic body. This can be seen as the "intrusive igneous magma" that is left behind after the surface is removed

answer; i believe the correct answer is (a) nigeria is the largest african crude (oil) supplier; /// so revenue from petroleum;