Some GNSS applications include the following: I. surveying II. mapping III. navigation IV. vehicle tracking.

• A. II, III and IV
• B. I, II and IV
• C. I, II, III and IV
• D. I, II and III

Answer: (C)

GNSS provides precise position, velocity, and time data that are the backbone of many geospatial tasks. In surveying, you need accurate positioning to determine land boundaries and stake out construction points; GNSS, especially with RTK or PPP, can deliver centimeter‑level accuracy needed for reliable surveys. In mapping, you attach coordinates to features so maps and GIS layers line up correctly; GNSS ensures features are georeferenced to the correct location on Earth. In navigation, real‑time position and velocity enable route planning and guidance for people and vehicles across roads, waterways, and airspace. In vehicle tracking, ongoing position data lets you monitor where a vehicle is, how fast it’s moving, and its route history for fleet management or asset security. Because GNSS data underpin all of these activities, all four listed applications are valid uses.