Suki is writing an essay comparing another gothic text to this excerpt from the strange case of dr. jekyll and mr. hyde.
on his way out, the lawyer stopped and had a word or two with poole. "by the bye,” said he, "there was a letter handed in to-day: what was the messenger like? ” but poole was positive nothing had come except by post; "and only circulars by that,” he added.
if her other gothic text contains the same gothic literature elements that appear in this excerpt, what should she focus on to draw a comparison?
a horrific event
a mysterious event
a supernatural event
an amusing event

I would contend that the right answer is the B) a mysterious event.

Explanation: Just to elaborate a little on the answer, it can be added that by reading just this excerpt it is only possible to infer that something mysterious seems to have happened, since the lawyer, Utterson, is asking Jekyll's butler, Poole, about the messenger who delivered the letter to his master, and the butler replies by saying that nothing was delivered by a messenger. This element is very characteristic of gothic literature, and it helps create suspense, wonder, and terror.    

“thy baited hooks shall tangle me no more.”

“hath taught me to set in trifles no store,”

“me lusteth no longer rotten boughs to climb.”