ANS:A - waiting

While bin cards are used in effective stores management, queuing theory is associated with the waiting time. Queuing theory is a branch of operations research that deals with the mathematical study of waiting lines, or queues. It analyzes the behavior of systems where customers arrive at a service facility and must wait for service. Queuing theory helps in understanding and optimizing various aspects of queueing systems, including waiting times, queue lengths, service rates, and resource utilization. Therefore, the term associated with queuing theory is the waiting time.