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Which risk increases when using gravitational time dilation for satellite navigation?

A)Beacon failure due strong gravity
B)Clock drift due relativistic effects
C)Orbital decay due signal lag
D)Doppler shift overwhelms GPS signals

💡 Explanation

Increased clock drift arises because the clock's time must be calibrated relative to Earth's gravity based on the principle of equivalence; therefore, relativistic effects distort time measurements, rather than beacon failure directly from gravity affecting the clocks physically.

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