Final answer:
The setting helps to create a suspenseful tone.
Step-by-step explanation:
The setting in the given passage helps to create a suspenseful tone. The description of the pitch black, smoky room and the presence of a sleeping Rottweiler contribute to a sense of danger and tension, making the reader fear for Beth's safety. The setting adds to the suspense by creating a foreboding atmosphere and highlighting the potential danger that Beth faces.