Definitely true. If a sentence doesn't have a verb or subject, it is considered a fragment.
Other than a question mark? I'd have to see the sentence to understand or is this the sentence?
It created Gothic literature.
C. In the daytime I ran by her side, and at night I lay down close to her.
By showing that the narrator followed around their mother, it creates the idea that the narrator is dependent on her.
Hope this helps, good luck mate! :D