Which search pattern covers one end of the area first?

• A. Creeping Line
• B. Expanding Square
• C. Spiral Search
• D. Grid

Answer: (A)

Starting at one boundary and sweeping across the area is an efficient way to ensure you cover from that end to the opposite side. The creeping line uses straight, evenly spaced transects that run from one edge of the search area to the other. You begin at the boundary and move across with consistent spacing, so every part along the length is checked without backtracking. This makes it ideal when the priority is end-first coverage, such as along a shoreline, road, or narrow corridor.

Other patterns don’t start from an edge in the same way. Expanding square and spiral begin at a central point and expand outward, which isn’t aimed at end-first coverage. A grid pattern covers the area in two directions for thoroughness, but it isn’t inherently end-first and can involve more overlapping and back-and-forth.