Baseline measurements are best described as

• A. A three-dimensional mapping method used outdoors.
• B. A time-recording system.
• C. Measurements taken along a single line between two objects, with objects located by distance from a starting point along the baseline.
• D. A photographic technique.

Answer: (C)

Baseline measurements use a fixed straight reference line between two known points. You locate other objects by measuring their distance along that line from a designated starting point on the baseline. This creates a simple, one-dimensional way to determine positions, which is why this option best describes baseline measurements. It isn’t about mapping in three dimensions, timing events, or taking photographs, which are unrelated methods.