The correct answer is: B. Between ceiling and floor level.
The ceiling height of a building is the distance between the top of the ceiling and the floor. It is typically measured in feet or meters. The ceiling height can vary depending on the type of building, the purpose of the room, and the building codes in the area.
Option A is incorrect because the ground level is the surface of the ground outside the building. The ceiling height is not measured from the ground level.
Option C is incorrect because the roof is the topmost part of the building. The ceiling height is not measured from the roof.
Option D is incorrect because the ceiling is the surface that is directly above the floor. The ceiling height is measured from the floor to the ceiling.