Reference points must be ________.

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Multiple Choice

Reference points must be ________.

Explanation:
Reference points are used to anchor measurements and recreate layouts reliably over time. They must be fixed and permanent because any movement or change would distort the distances, angles, and relationships used in mapping, reconstruction, and later comparisons of evidence. A stable point lets you reproduce the same geometry, verify findings, and build an accurate scene diagram. If a reference point were temporary or adjustable, hidden or variable, or arbitrary, subsequent assessments could rely on something that no longer exists or cannot be verified, leading to errors.

Reference points are used to anchor measurements and recreate layouts reliably over time. They must be fixed and permanent because any movement or change would distort the distances, angles, and relationships used in mapping, reconstruction, and later comparisons of evidence. A stable point lets you reproduce the same geometry, verify findings, and build an accurate scene diagram. If a reference point were temporary or adjustable, hidden or variable, or arbitrary, subsequent assessments could rely on something that no longer exists or cannot be verified, leading to errors.

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