Leaves change carbon dioxide and water into a. sugar and oxygen b. soil and sugar c. oxygen and sunlight d. none of the above

Hey there! :D

During the process of photosynthesis, leaves turn carbon dioxide and water into glucose and oxygen. (glucose is just a fancy word for sugar)

So "A" is correct.

We need trees to make oxygen as a waste, or product, of the reaction. Similarly, we take in oxygen and breathe out carbon dioxide. As a cycle. 

I hope this helps!
~kaikers 

The mass has escaped into a gas which you can not see so the law stays true.

C. definite shape, definite volume. that is a solid.