Which option describes the purpose of Quality Assurance in the context of roadway practice?

Quality Assurance (QA) in roadway practice plays a crucial role in ensuring the overall quality of construction projects. The purpose of QA is to confirm the accuracy and adequacy of quality control results, which are critical for maintaining safety, performance, and compliance with regulatory standards.

By verifying that quality control processes are functioning as intended, QA helps ensure that construction meets both specifications and intended outcomes. This includes systematic checks and balances throughout the project timeline, which enhances reliability and minimizes the potential for defects. This rigorous oversight fosters confidence in the materials and methods used, leading to better project outcomes and reduced rework or failures.

In contrast, focusing solely on monitoring contractors' obligations, calculating production costs, or collecting samples does not reflect the comprehensive scope of QA’s role. These actions may support quality control or project management but do not encapsulate the core purpose of Quality Assurance, which is fundamentally about ensuring systematic quality processes are in place and effective.