Which layout refers to audience seating that is arranged in a forward sloping manner?

The correct answer is the racked auditorium, which refers to a seating arrangement where the seats are positioned in a way that slopes down towards the stage. This design improves sightlines for the audience, ensuring that everyone has a better view of the performance, regardless of where they are seated. The sloped seating helps minimize obstructions and enhances the overall experience for those attending the performance, allowing for a more immersive experience.

Other terms in the choices relate to different theatre concepts. For example, a racked stage pertains to the stage itself being set at an angle or incline, which is different from audience seating. A receiving house typically refers to a venue designed to host performances rather than its specific seating arrangement. Stalls usually refer to the seating area on the main floor of a theatre, which may or may not be raked. However, the specific notion of sloping, which is critical in this context, aligns with the definition of a racked auditorium.