which branch of philosophy is concerned with fundamental questions about the nature of reality

The branch of philosophy concerned with fundamental questions about the nature of reality is metaphysics.

Metaphysics explores some of the most profound questions we can ask ourselves, such as:

• What is the nature of existence?
• What is the relationship between mind and matter?
• Does time exist independently of our perception of it?
• Is there a God or gods?

It delves into the basic structure of reality, the existence of things, and the properties that underlie everything that is.