What must a printout from a ticket printer system be attached to?

The correct choice is the Batch Certification Report because this document is critical for verifying that the concrete produced meets specified standards and requirements. The ticket printer system generates a printout that includes vital information such as the mix design, the quantities of materials used, and the timestamp of the batch. Attaching this printout to the Batch Certification Report ensures that there is a comprehensive record of what was produced during a specific batch, allowing for effective quality control, traceability, and compliance with project specifications.

This integration of data is essential for confirming that the concrete provided was indeed consistent with what was approved in the design phase, which is the primary concern during plant inspections. It aids in validating that each batch's quality aligns with expectations and regulations.

A Quality Assurance Report typically compiles various aspects of the project but is not specifically tied to the specifics of individual batches in the same way. The Mix Design Report outlines the proportions and types of materials in the specified mix but does not include records of actual production. The Daily Production Report summarizes overall operations for the day but does not provide the detailed level of accountability regarding individual batches that the Batch Certification Report does. Thus, the attachment to the Batch Certification Report ensures precision in quality assurance practices.