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Which phenomenon constrains GPS satellite accuracy reflecting spacetime distortion effects?

A)Gravitational time dilation
B)Atmospheric signal refraction
C)Receiver clock instability
D)Solar flare interference

💡 Explanation

The relativistic effect, gravitational time dilation, alters the clock rate because satellites experience weaker gravity; therefore, GPS accuracy requires continuous compensation rather than relying solely on terrestrial calibrations because satellite positions relative to Earth change.

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