Matter is something that takes up space, so air is matter as it takes up space, this statement can be proved true just by blowing up a balloon.
If you have the wrong tone or your body is showing a bad emotion, it could very well change others opinions of you in every way
Explain in more details the question pls
I would say D. because exercise helps you sleep and concentrate, but it can also help fight depression. Trust me on the depression part ; )
Hope this helps!
