Answer:
This sentence is a complex sentence.
Explanation:
A complex sentence is a sentence that contains an independent clause and one or more dependent clauses. An independent clause can stand alone as a sentence, but a dependent clause even though it has a subject and a verb cannot stand alone.
The sentence contain one independent clause and one dependent clause,
the independent clause is in bold below;
eight luxury residential towers that were designed by Steven Holl Architects are connected on the twelfth through eighteenth floors by enclosed glass and steel bridges.
it has a subject and a verb.
While the dependent clause is in bold below;
In Beijing, China,
it does not make any sense on it own.
Efficient means someone who is working in a well-organized way and plans things well. So think of what a character would be doing "Well organized" well planned...etc.
The characteristics that apply are: 2 - 4 - 7
These types of balads often focused on telling a story that took place in a single moment or incident.
Also, dialogues were widely used in these balads, to mark the numerous interactions between several characters that may appear in them.
Finally, medieval balads were written to be sung, because it was a form of entertainment in the middle ages, and this songs often were transmitted orally.
I believe the answer is C
