Read the following passage from a book that David Livingstone wrote about his travels in central Africa. “The country is becoming very beautiful, and furrowed [lined] by deep valleys; the underlying rocks, being igneous, have yielded [given] fertile soil. There is great abundance of large game [animals to hunt]. . . . We crossed the Mbai [River] and found in its bed rocks of pink marble. Some little hills near it are capped by marble of beautiful whiteness.”

Which best summarizes Livingstone’s description of Africa?

Africans are wealthy because they sell their marble.
Africa’s animals are evenly distributed throughout the continent.
There are abundant natural resources in Africa.
Most of Africa is made up of thriving cities.