The correct answer is: D. Sliding door is generally provided in show rooms
A louvered door is a door with a series of parallel slats or louvers that allow air to flow through while still providing privacy. Louvered doors are often used in bathrooms, kitchens, and other areas where ventilation is important.
A flush door is a door that has a smooth, flat surface. Flush doors are often used in bedrooms, living rooms, and other areas where a more traditional look is desired.
A revolving door is a door that consists of three or four doors that rotate around a central axis. Revolving doors are often used in public buildings, such as hotels, airports, and shopping malls, because they allow people to enter and exit the building quickly and easily.
A sliding door is a door that slides open and closed along a track. Sliding doors are often used in closets, garages, and other areas where space is limited.
In show rooms, sliding doors are often used to create a more open and inviting space. They can also be used to separate different areas of the show room, such as the sales area and the product display area.