Final answer:
The answer is A. True; queuing techniques are essential for analyzing situations with waiting lines to improve efficiency in various fields.
Step-by-step explanation:
Queuing techniques are indeed useful for analyzing situations in which waiting lines form, making the correct answer to the question A. True. In various fields such as business, engineering, and computer science, these techniques are used to manage and improve the efficiency of queues. By applying queuing theory, one can predict wait times, decide on the number of service channels, and optimize service processes. This is particularly important in areas like customer service, operations management, and traffic flow analysis, where managing waiting lines is critical to ensure customer satisfaction and efficient resource use.