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On a medieval astrolabe, which outcome results when the alidade's alignment is imprecise?

A)Parallax error in altitude readings
B)Reduced sidereal period precision
C)Epicycle calculation instability occurs
D)Solar declination data corruption ensues

💡 Explanation

An imprecise alidade alignment introduces parallax error, skewing altitude measurements because the sighting isn't truly aligned with the celestial body; therefore, altitude readings are inaccurate, rather than affecting time-keeping or solar calculations directly.

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