What is lincoln’s Purpose in this paragraph and how does he achieve it? Cite text evidence

10. what is the purpose of the introduction in an essay? a. to establish the main idea of the essay. b. to focus on current statistics c. to explain the main idea to the reader d. to highlight the most important concepts

"the only completely stationary object in the room was an enormous couch on which two young women were buoyed up as though upon an anchored balloon. they were both in white and their dresses were rippling and fluttering as if they had just been blown back in after a short flight around the house."

What mood is created in this excerpt from dracula by bram stoker?