Explanation:

Abyssinian Plateau (Abyssinian Plateau) is a plateau in Ethiopia (general), Ethiopia (Africa) with the region font code of Africa/Middle East.

The Atlas Mountains extend some 2,500km across northwestern Africa, spanning Morocco, Algeria and Tunisia, separating the Atlantic and Mediterranean coastline from the Sahara Desert.

The Guiana Shield is one of the three cratons of the South American Plate. It is a 1.7 billion-year-old Precambrian geological formation in northeast South America that forms a portion of the northern coast.

The Okavango Basin is an endorheic basin found in southwestern Africa, which extends across portions of Angola, Botswana, Namibia and Zimbabwe.

Therefore statement B is correct.