What evidence supports the law of conservation of energy?

Light energy is converted to chemical energy during photosynthesis.
Oxygen is made from the breakdown of carbon dioxide during photosynthesis.
Energy is absorbed by chlorophyll during photosynthesis.
The sun gives off light energy that is absorbed by plants.

Question

What evidence supports the law of conservation of energy?

Light energy is converted to chemical energy during photosynthesis.
 Oxygen is made from the breakdown of carbon dioxide during photosynthesis.
 Energy is absorbed by chlorophyll during photosynthesis.
 The sun gives off light energy that is absorbed by plants.

cookiemonster · Answer

@Allison

Allison · Answer

I don't think it's B .-. Or D.

A, or C. 
Which one do you think?

Allison · Answer

@Ultrilliam @Owen @cloutgang

Allison · Answer

Wait now I think it's D. e.e

@Elsa213