What advantages Africa has enjoyed due to its large areal size?​

Africa is the world's hottest continent with deserts and drylands covering 60% of land surface area (e.g. Kalahari, Sahara and Namib). Africa is the world's second driest continent (after Australia). Africa has approximately 30% of the earth's remaining mineral resources. Africa is distinctively unique continent among all 7 continents of the world. Africa has a very diverse culture. It is rich in cultural heritage and diversity, a wealth of natural resources, offers breathtaking tourist attractions. AFRICA IS THE SOURCE OF THE WORLD’S LONGEST RIVER
The Nile River is the longest river in the world, is approximately 4,258 miles (6,853 kilometers) long and passes Flowing northward through through 11 countries: Tanzania, Uganda, Rwanda, Burundi, the Democratic Republic of the Congo, Kenya, Ethiopia, Eritrea, South Sudan, Sudan and Egypt. Africa has an array of diverse ecosystems, from sandy deserts to lush rain forests.

The correct answer is:   [b]:   "physical systems" .

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