The correct answer is: B. Dormer window
A dormer window is a window that projects from the sloping roof of a building. It is typically framed with wood or stone and has a gabled or arched roof. Dormer windows provide additional light and ventilation to a room, and they can also be used to add architectural interest to a building.
A lantern window is a small, circular or octagonal window that is typically located in the roof of a building. It is often used to provide light and ventilation to a loft or attic space.
A louvered window is a window that is made up of a series of horizontal or vertical slats that are arranged so that they can be opened or closed to control the amount of light and air that enters a room.
A rash window is not a real type of window. It is a typo that may have been caused by autocorrect. The correct word is “dormer”.