Indian Ocean interior of Africa South Pole Tropic of Cancer
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Near Earth's equator, water generally exists naturally in the liquid and gas states. In which other part of Earth is water usually found naturally in only two states?
Possibilities:
- Indian Ocean
- interior of Africa
- South Pole
- Tropic of Cancer

South Pole