Which one of the following pairs a correctly matched? Geographical feature and region

Only option B is correctly matched. The Atlas mountains run through Morocco, Algeria and Tunisia in Northwest Africa, separating the Mediterranean coastal zone from the Sahara. Their folded structure is a Alpine-type orogeny, which is why they are described as young fold mountains.

• A is wrong: The Abyssinian (Ethiopian) Plateau lies in East Africa, not Arabia. It is the source region of the Blue Nile and is cut by the Great Rift Valley.
• C is wrong: The Guiana Highlands lie in northeastern South America, spanning Venezuela, Guyana, Suriname and French Guiana. They are not in Southwest Africa.
• D is wrong: The Okavango Basin is an inland delta in Botswana, in southern Africa. Patagonia is in southern Argentina and Chile, in South America.

The core concept is regional geography: knowing the continental location of landforms, rivers and basins. This links to Mains GS-I world physical geography, especially African and South American relief and drainage. Note that the Okavango is a delta that ends in the Kalahari, not a river basin draining to the sea.

Trap: Aspirants often pick A because the Abyssinian Plateau sounds Arabian. Remember that Abyssinia is the historical name for Ethiopia.