If you really love someone and you text them but they don't text you back. You let it go because they aren't interested. I am sorry for saying that, but it could also mean that they are doing something at the moment and can't text back. I say, give it a day and if they don't text back, don't bother texting back.
CSS in a separate file shared by many web pages provides a mechanism for a consistent layout, so my vote would be answer b.
However, with PHP driven templates you could achieve something similar. Also, JavaScript is commonly used for layout purposes (e.g., jQueryUI). But CSS is all about layout...
Answer:
I basically means something like the cloud, where your data is uploaded to servers and is then processed and transferred back to you when you need it.
Explanation:
Hope this helps :)
