Which object is a permanent boundary marker set in the ground?

• A. Monument
• B. Mojon
• C. Marker
• D. Geodetic Control Point

Answer: (A)

The idea being tested is what kind of object serves as the official, enduring reference for a boundary. A monument is the permanent marker that is placed in the ground to establish and anchor the boundary line. It’s chosen and designed to be durable and immovable, so future surveys and legal descriptions can reliably refer back to the exact point of the boundary.

A mojón (mojon) is a boundary marker used during surveying, often a smaller marker that may be temporary or provisional until a proper monument is established. A marker is a general term for any mark or stake and doesn’t specify permanence or legal standing. A geodetic control point is a precise reference used for calibrating a network of measurements, not specifically a boundary marker between parcels.

Therefore, the permanent boundary marker set in the ground is a monument.