This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to clean a macbook or macbook pro computer
Purchase cleaning products.
Cleaning a computer that is still running could compromise any open documents or programs. Be sure that the computer is not in sleep mode, but completely powered down.

OPTIONS: 1). Clean macbooks that are not keeping information in a high-speed printer nearby. This could mean the computer has shut down more than one time.. 2). Be sure that any unused buttons and hardware are out of harms reach. The best way to clean a macbook pro is to have your printer cartridges printed for you to print off, fully charged.. 3). If the computer needs to be used for another day or a week, it will need to be repaired. If you are having trouble finding cleaning products on the internet, and the computer is still powered down in sleep mode, call your local of computer repair services.. 4). If you have a removable battery, remove it. Make sure you detach the power adapter, too..
The answer is:
4).