Sorry I don't understand this
The fourth alternative is correct (D).
All descriptions are correct and must be followed to compile a list of references. First, check out what owner will say about it. Second, ask permission and third, if allowed, thank, as a good rule of education. Meeting these requirements you will have no copyright issues.
My first guess would be that it is an independent clause. This is just a single statement.
Answer:
I've never read it but based on the sentences provided I would say a
