I'm not 100% sure, but I think the answer is C - Order of Importance. Hope this helped any!
D.) Ballad
Hope this helps !:)
The verb <em>to cost </em>is C. linking irregular weak verb.
It is irregular because its past form is not formed with -ed, but: cost - cost - cost. It is linking because it links the subject with its price.
A. To establish the main points of the argument
