What is an advantage to saving documents in the cloud?

Question $2$ options:

It is saved on a device that you can take with you and then access from another computer.

It is saved on the computer you used, so you can go back to that computer and it will be there.

It is saved on a server you access through the Internet, so as long as you have an Internet connection, you can access it$.$

It is able to be accessed by others you share it with and all changes are saved as they are made.