Question

which one of the following items should always be backed up? a) every document you store b) electronic files c) confidential files d) paper files

Explanation:

In the context of data - management in Computer Science, electronic files are crucial and need to be backed up to prevent data loss due to various reasons like hardware failure, software corruption, or accidental deletion. While documents can be electronic or paper - based, and confidential files are a subset of electronic or paper files, and paper files are not typically "backed up" in the digital sense but rather may be scanned to create an electronic copy for backup purposes. Electronic files are the most general and appropriate answer for regular backup requirements.

Answer:

B. Electronic files