I believe the answer is B
Means someone or something is very light weight, metaphor
1.It's A because 'as' should have been used, meaning 'which'. 'I will refuse his demands which are outrageous '.
2.But' unless' has nothing to do with the context provided in C because 'until' should have fitted here.
B- hypermedia content is the correct option. The page has several links. These links will take the reader to different sources.
A- is not correct. The text from the example has links. A linear multimedia text does not have links.
C- is not correct. Non-linear multimedia is the set of options a user is given when he / she starts seaching for information. The webpage on Frost can be one option out of many.
D- is not correct. The webpage is not an instance of audio-visual media.