Which type of hydrant contains water in the barrel and has separate valves for each of the discharges?

The choice of a wet barrel hydrant is accurate because this type of hydrant keeps water in the barrel at all times. This design is particularly prevalent in warmer climates where freezing is not a concern. The presence of separate valves for each discharge allows for specific control over the flow of water, making it versatile for firefighting operations. When firefighters connect to the hydrant, they can open only the valve for the particular discharge being used, which helps manage the water supply and pressure more effectively.

In contrast, a dry barrel hydrant is designed to be drained of water in freezing temperatures to prevent ice from forming inside; it does not have water standing in the barrel and therefore does not provide the same operational characteristics as a wet barrel. A post indicator valve is not a hydrant at all; it is a valve that indicates whether a water supply for fire suppression is open or closed. A flush hydrant is typically installed at ground level and is used mainly for flushing water systems and does not serve the same purpose as a wet barrel hydrant. Thus, the configuration and functionality of a wet barrel hydrant make it the correct answer in this context.