Answer:
Cross-sectional research.
Explanation:
Here's a definition: Cross sectional research is a study in which subjects of different ages are compared at the same time.
Topographical Divisions
<span>The Great Escarpment.
The Central Plateau.
The Coastal Plain.
The Cape Fold Mountains.
The Coastline.
Highveld.Lowveld.
<span>Bushveld.</span></span>