C: bar graph
bar graphs are used to track changes over time, so I would say that C is your best bet
A domain refers to a group of computers that are part of a network and share network resources, like your home<span> computers all linked together sharing a printer. The user logs in to the domain and gains access to the resources. Several systems may be involved. The computer itself is referred to as a server.</span>
<h2>Laptops and Tablets are cool, classic, and have a business-y vibe to them but Destop Computers are preferred because they're way more adaptable, have a lot of useful ports USB, SD, etc, and computer monitor vary a lot and anytime you want you can get one with lot's of RAM and Memory so that's very cool, and convenient of you're a businessman.</h2><h2>So what would I choose? I would probably choose A Laptop, but you know, it's business. :)</h2><h3>Good Luck on your Studies!</h3><h3>David Edward.</h3>
C. Itunes.
In Apple devices, the iTunes if the only application may it be Windows or OSX operating system iTunes is the only official app registered by apple to stream via cable or wifi to the devices like iPhone, iPad and other Apple devices.
A. Streaming
Slightly the same with downloading but stream makes it self available as it download its content over the internet.
