In operations management, what does "lead time" refer to$?$

A$)$ The time taken to produce a single unit

B$)$ The duration between placing an order and receiving it

C$)$ The time taken to market a product

D$)$ The total production time in a shift

Which quality control technique involves tracking variations in a process to maintain consistent quality?

A$)$ Benchmarking

B$)$ Process mapping

C$)$ Statistical Process Control $($SPC$)$

D$)$ Quality Function Deployment

What is the primary focus of Total Quality Management $($TQM$)?$

A$)$ Reducing costs

B$)$ Improving employee satisfaction

C$)$ Achieving continuous improvement in quality

D$)$ Increasing production speed