Maps and records provide important information about:

The correct choice highlights the significance of understanding the type of pipe material and operating pressure when dealing with maps and records of a distribution system. This information is essential for several reasons.

Knowing the type of pipe material helps assess compatibility with the transported fluids, durability under operational conditions, and susceptibility to corrosion or other forms of damage. Different materials have varying lifespans and structural properties, which influence the maintenance and repair strategies employed.

Additionally, understanding the operating pressure is vital for ensuring that all components of the distribution system can manage the stresses imposed by that pressure. This includes validating that the pipes, valves, and fittings can handle their service conditions without risking failure, which is crucial for maintaining system integrity and ensuring public safety.

Maps and records serve as invaluable resources not only for ongoing operations but also for planning future upgrades or expansions of the system. They provide a comprehensive view of the infrastructure, which aids in decision-making processes when addressing repair or replacement needs based on the material and pressure specifications documented.

While the other options contain relevant insights, they do not encompass the critical, operationally focused information specifically about material types and operating pressures that are crucial for effective management of a distribution system.