Windows and linux are best in my opinion! Linux is not used by many people but a lot of apps can't be used for linux so best is to use windows. But Mac is not bad too. Hope I helped and have a nice day!
<span>It should be single-user/multitasking os.</span>
This way we can turn it on or off so we don't waste power.
Hope I helped! Just tell me if i'm wrong!
