A solarium is a glass enclosed patio or porch. The all glass structure is often built onto an
existing home to make use of the sunlight and give the feeling of being close to nature. Solariums can be slightly different shapes based on the style of glass used (curved or straight). Most of the time a solarium will have a curved eave as shown in the photo on the right. They usually have some window openings and tracks that accommodate shades to insulate against the variation in temperatures. It is a room that can be used in all four seasons.
Answer: (D) a room that is made of glass to allow exposure to sunlight
