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← ScienceWhich mechanism causes gravitational lensing affecting observed spacetime?
A)Spacetime curvature from mass-energy density✓
B)Quantum entanglement across vast distances
C)Doppler shift distortions of light
D)Cosmic microwave background anisotropies
💡 Explanation
Gravitational lensing occurs because spacetime curvature alters the path of light near massive objects; therefore light bends towards the mass, rather than traveling in straight lines in Euclidean space. Other effects are irrelevant.
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