What do you mean pieces? Like Laptop components? If so then motherboard,ram,cpu, and psu for a basic laptop so 4 I guess (5 if you want to include a gpu).
Webpage is a page of a site, such as https://example.com/test, where the bolded text is the page.
On the other hand, web applications, or simply web apps, are found in many websites, such as here and also in Connexus. They end in either aspx or jsp, which stand for asp.net appx and javascript page, respectively.
So, your answer would be A: Web pages provide information, while web applications allow the user to do something.
Hope this was answer you were looking for. Have a nice day!
<span>Change "move only through matter" to "move through space and matter."</span>
