What does traceability mean?

• A. The ability to relate measurements to a reference standard through an unbroken, documented chain.
• B. The capacity to perform measurements without any standards.
• C. The ability to store measurement data in a computer system.
• D. The process of transferring results to another unit.

Answer: (B)

Traceability means you can connect a measurement result to a reference standard through an unbroken, documented chain of calibrations, with stated uncertainties, ultimately linking to SI units whenever possible. This linkage ensures that measurements made in different places and times can be compared and trusted because they share a common reference.

The other ideas don’t fit traceability. Measuring without any standards would break the chain to a reference standard, so it wouldn’t be traceable. Simply storing data in a computer system is about data management, not about linking results to standards. Transferring results to another unit is about converting units, not establishing the standard-based linkage that makes results comparable worldwide.