Excerpt from The Sahara and Sahel
Roberto Barerra

5Thanks to these two animals and the knowledge of the whereabouts of the scattered oases that provide water and shelter, people have been able to live in and around the Sahara for thousands of years.

The word two, used in paragraph 5, sounds like to and too. These words are called
A) antonyms.
B) compounds.
C) homophones.
D) synonyms.