* 다음 글의 주제로 가장 적합한 것은?

Our lives are full of various of wonderful effects of colors.
Look at nature.
The sight of green leaves in the woods refreshes us
when we are tired.
The dark blue of the sea makes us think of the wonder of life,
and the clear blue sky fills us with hope.
Look at our bodies.
When we hurt ourselves we may be shoked by the red blood,
but the color is a warning and tells us that we must do something to get out of danger

① the importance of color
② effects of colors on nature
③ effects of colors on our lives
④ colors in life and nature
⑤ various fellings of colors

저는 4번이라고 생각하는데 다른 번호들도 은근히 답이 될것 같기도 하고요;;
모호한 문제입니다.
선생님들의 소중한 의견을 듣고 싶습니다.