Step 1: Understanding the question.
The question is asking for the first person to successfully navigate around the African continent.
Step 2: Historical context.
- Henry the Navigator was instrumental in advancing Portuguese maritime exploration but did not circumnavigate Africa.
- Marco Polo was an explorer of Asia, not Africa.
- Bartholomew Dias was the first to successfully navigate around the southern tip of Africa (Cape of Good Hope), opening the sea route to Asia.
- Columbus was famous for discovering the Americas, not Africa.
Step 3: Conclusion.
Bartholomew Dias is the correct answer as he was the first to reach the southern tip of Africa in 1488.
Final Answer:
\[
\boxed{ \; Bartholomew \; Dias}
\]