Which of the following backup techniques provides the SLOWEST restore time?

Full backups involve restoring a single, complete copy of the data, which is generally the fastest and simplest restore process because no other backups are needed.

Differential backups record all data changed since the last full backup. To restore, you only need the last full backup and the latest differential backup, making the restore process faster than incremental.

Incremental backups record only the data that has changed since the last any type of backup (full or incremental). To restore, you must first restore the most recent full backup, then apply every subsequent incremental backup in the correct order, which is a time-consuming and complex process.

rsync is a utility for synchronizing files and directories, not a backup technique like full, differential, or incremental, and its restore time depends on how it's used to reconstruct data.