Which of the following would be BEST to ensure data immutability?

A flash drive, while offering fast access, allows data to be written, rewritten, and deleted multiple times, thus not ensuring immutability.

LTO-2 (Linear Tape-Open generation 2) is a tape technology for backups and archiving, but by itself, it does not guarantee immutability unless specific WORM features are explicitly enabled.

A disk drive, like a flash drive, allows data to be written, rewritten, and deleted multiple times, making it unsuitable for ensuring data immutability without additional software or hardware protections.

Write Once Read Many (WORM) technology is specifically designed to ensure data immutability by allowing data to be written only once and subsequently read multiple times, preventing any modification or deletion. This makes WORM an ideal solution for regulatory compliance, archiving, and data integrity where information must remain unaltered.