1A: Alerts and warnings are typically part of the operating environment to monitor and respond to issues in real-time.

2B: Concurrency of usage is critical in the business environment where multiple users interact with the system simultaneously.

3A: Operational processes are key aspects of the operating environment, ensuring the smooth running of day-to-day activities.

4C: Resource utilization is a technical concern, focusing on how effectively system resources are used.

5C: Response time is a technical metric that directly affects user experience and system efficiency.

6B: Throughput of data, transactions, and other units of work performed is relevant to the business environment where the volume of operations impacts overall performance.

This categorization aligns with the ISTQB framework for performance evaluation across different environments, ensuring comprehensive coverage of performance metrics.