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← ScienceWhich mechanism causes increased radio signal delay traversing spacetime near a black hole?
A)Gravitational time dilation✓
B)Electromagnetic force reduction
C)Quantum entanglement decoherence
D)Hawking radiation interference
💡 Explanation
Gravitational time dilation causes radio signals to slow near a black hole due to spacetime curvature; because gravity affects time flow, the signal takes longer to travel; therefore, the delay increases rather than interference or field reduction.
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