What is the main focus of ontology?

Ontology primarily concerns itself with the philosophical study of being and existence. It explores questions about what entities exist in the universe, how they can be categorized, and what it means for something to exist. This branch of philosophy investigates the nature of reality and the fundamental categories of being, as well as their relationships.

The significance of ontology lies in its foundational role in various disciplines, including philosophy, metaphysics, and even areas like psychology and science, where understanding the nature of existence influences theories and frameworks. While other options touch on different philosophical topics—such as the ethics surrounding existence or the logic behind knowledge—they do not capture the specific focus of ontology, which is centered on the nature of existence itself.