What do we learn from Jonathan and Dr. Seward’s journal entries?

The love which Arthur, Quincey, and Seward had for Lucy has been basely transfigured into hate at the sight of Lucy; moreover, it is somewhat surprising that these lusty men are disgusted at the abundant sensuality of Lucy, now that she is a vampire. When she approaches Arthur in her vampire form, it is with a sensual embrace. Instead of arousing passion, however, there is only a feeling of repulsion and disgust. It is clear that in her vampire form, Lucy's carnal aspect is highlighted and emphasized.

Explanation:

This novel has set the course for all subsequent vampire lore — for example, the belief that a wooden stake must be driven through the vampire's heart and that the head must be removed and the mouth stuffed with garlic. All of the numerous, subsequent treatments of the vampire legend depend on these factors.

edwards uses the phrase "o who can express what the state of a soul in such circumstances is! " in order to illustrate that this type of suffering is unimaginable. the word "express" denoted that the state of a suffering soul is required to be described by any person, but it would not happen because no one can imagine how this suffering is felt.  

-show what might happen if the reader disobeys edwards is not correct because this is described trhough the text, not by the phrase used.

-describe what endless suffering looks and feels like is not correct because this description might be the porpuse of the excerpt provided, not the porpuse of using the phrase during the writting.

-prove that few people have survived limitless suffering is not correct because it is implied that the soul of a person is already suffering and doesn't have any way to escape.