Which of the following commands is used to create or delete partitions on Windows XP?

'Part' is not a valid Windows command-line utility for partition management.

DISKPART is a command-line interpreter included in Windows XP and later versions that allows administrators to manage disks, partitions, and volumes. It replaced the older fdisk tool for Windows NT-based systems and supports creating, deleting, formatting, and assigning drive letters to partitions through an interactive scripting interface.

fdisk is a legacy tool used in MS-DOS and Linux environments; it is not the correct tool for managing partitions on Windows XP.

'Active' is a subcommand used within a DISKPART session to mark a partition as active, not a standalone partition management command.