Answer:
3-using a wild card in your search
Explanation there is the rest in comments
Well the only one that is actually a piece of programming is A. Word Processing Program. B, C and D are all peripherals for a computer not actual software for it. Basically if you have to install it on the computer its software. Now B C and D may need software to make them compatible with your computer they themselves dont need to be installed.
I would probably say B even though the other methods might work as well
