Here are the answers to your questions:
- T (True)
- T (True)
- F (False)
- C (Both of these)
- "a) 25% of Africa is not inhabited" is represented by level a (a sub-point of "1. Much of Africa is wilderness").
- F (False)
- B (Topic)
- "A. Africa" is represented by level A (a main section under "I. The Eastern Hemisphere").
- T (True)
- "1. Much of Africa is wilderness" is represented by level 1 (a sub-section under "A. Africa").
Let me know if you need further clarification or assistance!