Two hundred million years ago earth's continents were all joined in one supercontinent known as

mantle
laurasia
pangaea
tsunami
gondwanaland

Gondwanaland

Explanation:

Gondwanaland -

It is the super - continent which existed from the Neoproterozoic age up till the Jurassic age .

It was basically a large piece of land , where all the continents present today where merged together .

The Gondwanaland includes , Arabia ,  Indian Subcontinent , Australia , Antarctica , Africa , South America , combined all together .

Hence , from the question , the correct answer is Gondwanaland .

lol i would say c -porductivity