Conical Vent and Fissure Vents
Mid-Ocean Ridges
Composite Typer Volcanic Landforms
Shield Type Volcanic Landforms
Caldera
I believe the answer is a.
Madagascar is the 4th largest island in the world.
Answer:
In its most general sense, the term "world" refers to the totality of entities, to the whole of reality or to everything that is. The nature of the world has been conceptualized differently in different fields. Some conceptions see the world as unique while others talk of a "plurality of worlds".