What means the data is still saved even if you turn the computer off or unplug it?​

Explanation:

The hard drive is long-term storage, which means the data is still saved even if you turn the computer off or unplug it. When you run a program or open a file, the computer copies some of the data from the hard drive onto the RAM. When you save a file, the data is copied back to the hard drive.

answer; its the top layer;