Yes the ansewer is c bc you can look it up!
A) operating system
It is going to let you "operate" it using the mouse and keyboard
Answer:
make the element sizes a percentage
Explanation:
Without using a framework specified for this type of thing such as Bootstrap, the best way to do this would be to make the element sizes a percentage. By making the size of everything a percentage it will automatically resize itself to take up the same percentage of the screen at all times. Even when the browser window is resized to any size that the user wants. This also applies to monitors of different sizes and mobile devices.
I'm not too sure, but I can remove three of the options above. Artificial Intelligence programmers write code for Artificial Intelligence- tis in the name. Game tool programmers code for video games. Web programmers program webpages or apps for the web.
Of the two options left, I would say that it is most likely D. System Programmers. It's not a definite, though. Good luck!