3D printing helps to reduce the time it takes for a manufacturer to create the product. This lets manufacturers invest their time to make flawless products because the production cycle time is reduced.
Operating System (OS) is the answer.
An application runs in/on an OS. It is not the OS itself. Like Word or Chrome are applications.
Systems is too generic and not specific enough to mean anything in this context. Throw away answer.
Network Operating System does not 'usually' run on a hard drive but on memory chips in things like routers, wireless access points and switches that move network traffic.
Answer:
This would all depend on what kind of video games you are talking about, most people would say that playing on you phone is like playing a game on a console or a PC.
most kids do play on these three things, so I'm going to go with answer choice C.
Explanation:
Reason why is because just like there are many who play, there are many who don't. I being one who prefers to read would like to make it known that not all teens do play video games, and that there are plenty of those who would rather do something productive.