What aspect of Quality Control ensures data credibility for contractor payment?

Verified QC data is essential for ensuring data credibility for contractor payment because it provides a validated and trustworthy record of the quality of work performed. This data reflects accurate measurements, test results, and evaluations conducted in accordance with established standards and protocols. When QC data is verified, it confirms that the contractor's output meets the required specifications and quality benchmarks, thus serving as a reliable basis for processing payments.

In contrast, manual logs may be prone to human error and can vary in consistency and detail, leading to questions about their reliability. Client feedback, while important, is subjective and may not provide the quantitative evidence needed for payment decisions. Estimate adjustments are typically based on forecasts and projections rather than concrete data, which means they don't necessarily correspond directly with the actual quality of work completed.