Which field explores fundamental questions about existence and knowledge?

• A. Philosophy
• B. Astronomy
• C. Medicine
• D. Architecture

Answer: (A)

Exploring existence and knowledge is the hallmark of philosophy. This field asks big questions like what exists, how we can know anything, and what counts as truth or meaning, using careful reasoning and argumentation to examine beliefs and the nature of reality. Among the options, philosophy is the only one whose central aim is to engage with these fundamental questions. Astronomy studies celestial bodies and the laws of the universe; medicine focuses on health and disease; architecture concerns designing and constructing buildings. So philosophy best fits the goal of examining existence and knowledge.