Final answer:
The Windows operating system uses Windows Firewall to disable a port. Users can create inbound or outbound rules to block specific ports through the advanced settings of the Firewall utility. Option D is correct.
Step-by-step explanation:
In the Windows operating system, the tool used to disable a port is D. Windows Firewall. To disable a specific port, you can create a new inbound or outbound rule in Windows Firewall that blocks the port number associated with the service you wish to disable.
Windows Firewall is an integrated part of the Windows operating system and provides a line of defense against threats that try to reach your computer over an internet connection. For example, if you want to disable port 80, which is typically used for HTTP traffic, you would navigate to the 'Advanced settings' in Windows Firewall, select 'Inbound Rules' or 'Outbound Rules' based on your needs, and create a new rule to block traffic on that port.