Marlena likes history and geography the best.
So 'who enjoys many different subjects' would be the answer.
Further explanation: The sentence will be the same whether that non restrictive modifier was present or not.
Answer:Ordinary people can act heroically in chaotic situations.
Explanation: This is the answer as it shows how ordinary people can save the day! And everyone should save the day!
Cooperation? not sue but hope it helped:)
You would use a colon (:) or semi-colon (;)