What is one key feature of a mobile water supply apparatus?

Answer: C — It has a minimum certified capacity water tank

A key feature of a mobile water supply apparatus is its minimum certified capacity water tank. This aspect is crucial because it determines the apparatus's ability to store and transport sufficient water for firefighting operations, particularly in areas without readily available water sources, such as hydrants. Having a specified minimum capacity ensures that the apparatus can meet certain performance standards and is equipped to effectively support fire suppression efforts. This requirement is particularly important for ensuring that emergency responders have adequate water supplies at their disposal, which can be critical in various situations, especially in rural or remote locations. The certified capacity also aids in compliance with regulations and guidelines pertaining to fire service operations, helping to standardize equipment across different departments and ensuring reliability in emergency scenarios.