What three calibration aspects are definitely linked with local measurements and national standards?

The correct choice identifies three critical aspects of calibration that are foundational to ensuring that local measurements align with national standards. Calibration value refers to the numerical representation of a measurement that is obtained during the calibration process. It is essential because it establishes the baseline against which measurements are compared and evaluated.

Uncertainty is another crucial aspect, as it quantifies the doubt associated with a measurement result. In calibration, understanding and managing uncertainty is vital for maintaining the integrity of measurements, ensuring that they comply with established standards. This addresses the confidence levels and possible variations inherent in measurement processes.

Traceability connects local measurement systems to national or international standards. It ensures that measurements can be traced back to recognized reference points, providing a framework for consistency and reliability across different settings and periods. This connection is fundamental to the integrity of measurement systems within various industries, as it ensures that the measurements are valid and can be trusted.

The other options describe important concepts in measurement and calibration but do not directly emphasize the link between local measurements and national standards as effectively as the correct choice does.