What is a central concept introduced by the theory of relativity?

The theory of relativity, developed by Albert Einstein, fundamentally altered our understanding of space, time, gravity, and the universe. Comprising special and general relativity, it introduced groundbreaking concepts like the equivalence of mass and energy (E=mc^2) and the curvature of spacetime. This theory has profound implications for cosmology, astrophysics, and the very fabric of reality.

What is a central concept introduced by the theory of relativity?

1. A.The Earth is the center of the universe.
2. B.Time is an absolute, unchanging constant.
3. C.The equivalence of mass and energy (E=mc^2).
4. D.Galaxies are static and never move.