Your answer is Running through the hills. It has no subject.
Who is running through the hills?
answer is D.
Main entries come first. A main entry consists of the meaning shared by the members of the synonym group, a verbal illustration, and lists of synonyms as well as any related words, phrases, near antonyms, and antonyms.
ANSWER:
D. Using historical research ensures that you create original work and use appropriate details.
This will ensure that you are aware of historical facts and so don't produce work which is similar or the same as what is written in the past. As well as this, it will ensure that you are respecting the details and facts of historical events and that your work makes sense.