Which statement should go into the box with the question marks

Explain the difference between a physical change and chemical change

During your research in the library, you have found a stack of resources on the same topic. to better organize these resources on the same topic. to better organize these resources, what information analysis method should you use?

Iknow this lets see if you do i am 6 my sister is half my age,now i am 60 how old is my sister