I would go with A) Tablet because that's basically a bigger phone and mobile cmp combined, its not D) because that's a synonym for a smartphone and not C) because paper and pencil is not like a smartphone, and not B) because that's like reading online books.
They're not dangerous. However, they do cause mild tremors.
Client server network as it has a powerful server which provides all the networks required on the network. Files are usually backed up regularly.
<span>The answer should be: Virtual Desktop Infrastructure</span>