Which term describes movement along a line oriented 45 degrees from the start line?

• A. Area monitoring.
• B. Nearside-Farside.
• C. Course Leg.
• D. Zig-zag monitoring.

Answer: (D)

The main idea here is how a sweep path is laid out to cover space while moving forward. A line that runs at a 45-degree angle from the start line is a diagonal path, and zig-zag monitoring is the pattern that uses alternating diagonal movements to sweep across an area. This pattern naturally describes moving along lines oriented at 45 degrees and then shifting direction to extend coverage, which is why it fits best for that orientation. In contrast, area monitoring aims at broad, non-specific coverage; nearside-farside is about viewing from two sides; and a course leg is just a single straight segment of a route rather than a sweeping diagonal pattern.