Here's why:

* Physics is about the fundamental building blocks of the universe. It explores how energy and matter behave, interact, and change. This includes concepts like motion, force, gravity, light, heat, and electricity.

* Option B is incorrect. The study of living things is called biology.

* Option C is incorrect. While physics does deal with the properties of matter, it's a much broader subject than just classifying different types of matter.

Let me know if you have any more questions!