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By the late 1700s, which navigational consequence increased from the use of Greenwich Mean Time?

A)Shipboard chronometer calibration errors
B)Sextant error propagation at sea
C)Improved accuracy in longitude determination
D)Increased computation of magnetic variations

💡 Explanation

Accurate timekeeping enabled consistent determination of longitude based on the **earth's rotation;** because measuring the angular difference between local time and GMT became possible. Therefore, longitude calculations improved, rather than calibration issues or sextant errors influencing results significantly.

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