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!
I am not sure but I think that it is either the First option or the Third option but you would probably need more information.
Answer:
Have a talk with your teacher. Ask why she doesn't believe you, and if it still doesn't work, have a talk with someone that can physically help you - a principle or another teacher may be the best solution.
