Final answer:
The correct command to use is ipconfig /release to terminate the DHCP lease on a Windows workstation.
Step-by-step explanation:
The correct command to use in order to terminate your Windows workstation's DHCP lease is ipconfig /release. This command releases the IP address and other configuration information obtained from the DHCP server, allowing the workstation to obtain a new lease or use a static IP address if configured. The ipconfig /renew command is used to renew the DHCP lease, while the ipconfig /flushdns command is used to clear the DNS cache on the workstation. The ipconfig /all command displays detailed configuration information about all network interfaces.