Select the correct option to test your answer: A atomic oxygen (O) and ordinary oxygen (O 2 ) B only ozone (O 3 ) C mixture of atomic oxygen (O), ordinary oxygen (O 2 ) and Ozone (O 3 ) D only ordinary oxygen (O 2 ) Correct Answer: Option C (mixture of atomic oxygen (O), ordinary oxygen (O 2 ) and Ozone (O 3 )) Verified correct option for General Knowledge (GK) (World Geography).