Which data storage technique involved with backup is characterized as a tape?

The technique characterized as a tape for data storage and backup refers specifically to magnetic tape storage, which is often used for making archival copies of data. This method is known for its high capacity, longevity, and cost-effectiveness when it comes to backing up large amounts of data over time. Tape storage is typically used in situations where data access is not time-sensitive, such as archiving records that need to be kept for compliance or historical purposes.

Tape storage systems allow organizations to create reliable backups that can be stored offline and protected from cyber threats, ensuring that critical data is preserved securely. Tape systems are particularly beneficial in environments where massive amounts of data need to be backed up, as they can handle high volumes in a relatively small physical footprint compared to other storage options.

In contrast, the other options refer to different storage methods that do not involve tape. USB drives and optical discs serve immediate access purposes rather than long-term archival, while cloud storage focuses on convenience and accessibility rather than the singular aspect of tape-based archival data storage. Therefore, option C is the correct choice as it directly aligns with the characteristics of tape storage for backups.