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Which navigational oversight risked increased position error, due to accumulated offset?

A)Chronometer's rate not frequently reset
B)Failing to correct for refraction
C)Inaccurate lunar phasing observation
D)Ignoring gyroscopic compass precession

💡 Explanation

Neglecting to frequently update a chronometer's rate introduces accumulated error through drift; this is because the timing offsets add linearly with time, eventually causing significant longitude miscalculations. Therefore, fixing a rate is vital, rather than trusting initially rated value alone.

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