Explanation:

- Secondary Storage: The right answer is secondary storage. These are non-volatile storage devices where data persists even when the computer is turned off. Hard drives and SSDs are common examples.

- Tertiary Storage: This refers to storage used for archiving and back-up, like magnetic tape libraries, and is not highly accessible.

- Primary Storage: This is temporary and volatile, such as RAM, which is used for immediate access and processing by the CPU.

- Offline Storage: This includes any form of data storage that is not connected directly to the computer, like USB drives when not plugged in.