Elevation is explicitly listed as a consideration when determining applying & implementing the water supply.

• A. Not mentioned
• B. Only for elevated properties
• C. It is explicitly listed as a consideration
• D. It is irrelevant

Answer: (C)

Elevation directly affects hydraulic head, which in turn determines pressure and flow in an irrigation system. The higher the point of discharge relative to the water source, the less pressure you’ll have at that point, unless you compensate with pumps or pressure-boosting devices. Conversely, lower points can have higher pressures. Because of this relationship, elevation must be considered when determining and implementing the water supply to ensure all zones receive adequate pressure and flow.

This isn’t only about parts of a property that look tall; even modest elevation differences across a site can change pressure requirements, so elevation is a recognized factor in design and installation. That’s why the choice stating that elevation is explicitly listed as a consideration is the best fit.

It wouldn’t be correct to say it’s not mentioned, only for elevated properties, or irrelevant, because elevation affects the system's ability to deliver water effectively across different areas.