How does the vampire diaries use fear to propel the story

Uhm I would say that it uses fear because they are vampires, "it may have lots of suspense because people are going to find out their secret"  There could be blood, and just overall a lot of people find that sort of thing frightening.

Hope this somewhat helps :)

Vampires diaries use fear to propel the story because they are able to feel emotions more strongly because everything is enhanced. Vampires also have control over their emotions. Emotions can empower witches and their magic, while Werewolves are strengthened by anger, though they are also very susceptible to it.

Explanation:

this answer to this question is c. allegory

why?

stories with allegories have a hidden symbolic meaning with a theme. the hidden meaning can be political, or other real life problems.