Which theory explains gravity as the curvature of spacetime?

• A. Einstein's General Theory of Relativity explains gravity as curvature of spacetime
• B. Newton's Universal Law of Gravitation explains spacetime curvature
• C. Both explain gravity exactly the same
• D. Gravity is an emergent phenomenon from thermodynamics

Answer: (A)

Gravity as curvature of spacetime is explained by Einstein's General Theory of Relativity. Mass and energy warp spacetime, and objects move along the curved paths—geodesics—created by that curvature, so what we perceive as gravity is the geometry guiding motion. This differs from Newton's law, which treats gravity as a force in flat spacetime and works well only in weak fields. The idea that gravity emerges from thermodynamics is a distinct hypothesis and does not describe gravity as spacetime curvature. In strong gravitational fields, the curvature-based description makes correct predictions that Newtonian gravity cannot, which is why this geometric view is the standard explanation.