Final answer:
Time Division Multiplexing (TDM) utilizes adjustable time slots based on priority and need for multiple transmissions over copper lines.
Step-by-step explanation:
Utilizing time slots that are adjusted according to priority and need is an example of Time Division Multiplexing (TDM) on copper lines. This type of multiplexing divides time into segments or slots and allocates these slots to different signals or data streams, allowing multiple transmissions to occur over the same channel without interference. Priority and need adjustments can be made in a dynamic version of TDM known as Dynamic TDM or Statistical TDM, where time slots are allocated on-the-fly based on the priority of the data and the real-time bandwidth requirements of the channels.