Which of the following are uses of geodesy?

• A. Determine Land Boundaries
• B. Increase Navigational Safety
• C. Improve Transportation
• D. All of the Above

Answer: (D)

Geodesy provides the framework of measuring the Earth and establishing precise reference systems that others rely on for consistent positioning. With that shared framework, land boundaries can be defined and maintained accurately across surveys and jurisdictions. It also underpins navigation by delivering accurate positions, charts, and reference frames used in ships, aircraft, and vehicles for safety and efficiency. In addition, this same geodetic foundation enables the design, planning, and construction of transportation networks by ensuring precise alignment, mapping, and integration of infrastructure over large areas. Because all three uses—defining boundaries, aiding navigation, and supporting transportation—depend on a common, accurate geodetic reference, the best answer is all of the above.