Which detail from the story monkey paw is part of the exposition?

In "The Monkey's Paw" by W.W. Jacobs, the exposition includes the introduction of the White family, particularly Mr. and Mrs. White and their son Herbert, as they interact in their home. The story sets the stage by describing the setting, which is a cozy yet isolated cottage, and introduces the mysterious monkey's paw that is brought to them by Sergeant-Major Morris. This background establishes the family's normal life and hints at the supernatural elements that will soon disrupt it.