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Which surveying error increases disproportionately when algebraically summing short, biased angle measurements?

A)Cumulative propagation of systematic error
B)Instrument drift due to temperature
C)Incorrect assumption of earth sphericity
D)Observer parallax in sighting poles

💡 Explanation

Summing angular errors algebraically involves cumulative propagation. Therefore, any initial systematic bias will amplify with more measurements, rather than remaining bounded as a random error would, because a systematic error consistently skews each measurement in roughly the same direction.

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