"Sorrow knocked at my door, but I was afraid" is an example of <em>D. personification.</em>
Personification is a literary device in which animals, objects or ideas are given human attributes. In this case, sorrow is given the ability to knock at someone's door, but as we know it is only a figure of speech because sorrow cannot knock at the door.
When I first started writing professionally, there were a lot of basic questions in my mind, one of which was, What are the major differences between a short story, novelette, novella, and a novel?
Novellas and novelettes might not be very common, but we often see short stories and novels. Knowing the differences, however, is still important. Although they are all works of fiction, each type has its own purpose. In this article, I will try to put light on some of the major differences between flash fiction, short story, novelette, novella, and a novel.
Beginners will find this very helpful in their writing journey. Apart from some of the basic differences in terms of word count, you will also learn a few technical points that differentiate these works of fiction.
I'm not sure but I think it needs no comma. Hope this helped.