Which waste is specifically mentioned as being discharged from showers, lavatories, and sinks?

The correct choice is grey water, which refers specifically to wastewater generated from sources such as showers, lavatories, and sinks, excluding toilet waste. Grey water typically includes water used for personal hygiene, such as washing hands, bathing, and cleaning dishes. This type of wastewater can often be reused for irrigation or other non-potable applications, as it generally contains fewer contaminants than other types of wastewater.

Black water, in contrast, contains human waste from toilets and is considered more hazardous, while stormwater refers to rainwater runoff that can carry pollutants from surfaces. Solid waste is a broader category, typically referring to refuse and materials that aren't liquid in nature. Understanding the distinctions between these different types of waste is essential for proper waste management and environmental protection practices.