An imaginary line running in a North-South direction and intersects with the base line is:

• A. The Contour line
• B. The Meridian line
• C. The Baseline
• D. The Principal parallel

Answer: (B)

In the Public Land Survey System, the grid that helps describe land is built from a north–south line called the principal meridian and an east–west line called the baseline. The line described here runs north–south and crosses the baseline, which makes it the principal meridian. Contour lines, by contrast, show elevation on a map and aren’t part of the survey grid. The baseline itself runs east–west, not north–south. There isn’t a standard term “principal parallel” used in this surveying context.