_____ is the determination of the unknown position of a survey station by using the observed directions from the station to points of known positions.

• A. Intersection, known
• B. Resection, known
• C. Resection, unknown
• D. Intersection, unknown

Answer: (B)

This is resection. In resection, you determine the position of an unknown survey station by measuring the directions (bearings) from that station to points whose coordinates are already known. Each observed direction defines a line that passes through the unknown station and its corresponding known point. With two or more known points, the intersection of those lines pinpoints the exact location of the unknown station. This approach relies on angular measurements rather than distances and is especially useful when you can sight known points but distance measurements are difficult. The idea contrasts with methods that use directions measured from known points toward the unknown; the description here specifies directions from the unknown station to the known points, which is why resection is the correct fit.