What can sewage wastewater holding tanks receive discharge from?

Sewage wastewater holding tanks are designed to collect and store wastewater from various fixtures in an RV, which can include bathroom sinks, kitchen sinks, showers, and toilets. This means that they can receive discharges from a wide range of fixtures, not just limited to one specific type.

The correct answer reflects the versatility of these holding tanks, as they are capable of accommodating discharges from several sources throughout the RV. This is important for effective waste management and helps ensure that all wastewater is contained until it can be safely disposed of at an appropriate facility.

In contrast, the other options suggest limitations that do not accurately represent the capabilities of sewage wastewater holding tanks, which are meant to handle multiple types of waste generated within the RV.