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← HistoryWhich navigational error grows when observations through a sextant use an inaccurate artificial horizon?
A)Lateral displacement of celestial bodies
B)Cyclical variation in magnetic declination
C)Systematic error in altitude measurement✓
D)Unpredictable shift in ocean current speed
💡 Explanation
System altitude error accrues due to incorrect horizon references; specifically refraction error becomes significant, because the measured angle relies on a faulty baseline. Therefore, measured angles are off systematically, rather than inducing displacement or affecting other navigational factors.
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