Suppose you are looking at a yellow fish in a fish tank. the tank is next to a window. what's the path that light takes in order for you to see the fish? ,starting from the sun and ending at our eyes

Assuming that you are between the window and the fish tank, the sunlight shines in from the window (refracts slightly), reflect off the fish, and then enter your eyes (you can elaborate more on eye structure if you would like)

U whay do you need with?

Reducing agents  oxidized by the reaction