Answer:
Idk if an app is ok too but for an app there is one called monkey. my friend showed it me. you can meet a loy of new people on there. its a speed video call with everyone. I think you get 30 seconds and if you want to talk more then you just add time or add each other as friends
Out of the ones that you mention, the correct answer should be
<span> Operating system</span>
Answer:
Functional requirements usually define if/then behaviours and include calculations, data input, and business processes. Functional requirements are features that allow the system to function as it was intended. Put another way, if the functional requirements are not met, the system will not work.
Explanation: