Question

Answer it please....21st question only... ​

Answer 1

Explanation:

Here is Your Answer.....

Answer 2

Answer:

The hard drive (sometimes called the hard disk) is the main storage device in your computer. Like RAM, it can be added to and changed, and like ROM it is non-volatile, but it is slow. If you have files and folders on your computer, are stored on the hard drive. The operating system is also stored on the hard drive.