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When Medieval navigators relied primarily only on astrolabes, which effect increased position error during ocean voyages?

A)Cumulative instrument and setup inaccuracy
B)Unpredictable stellar aberration deviation
C)Increased atmospheric refraction inconsistency
D)Variable gravitational tidal acceleration

💡 Explanation

Positional error increased because instruments accumulate small errors due to the imperfect construction combined with each measurement using angular values; therefore setup inaccuracy accumulates, rather than being corrected without cross-referenced measures.

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