A tracing map, or part of it, on transparent paper or plastic; light-blue pulls are used in color separation.

• A. Pull-u
• B. Photolitography
• C. Protractor
• D. Representative Fraction

Answer: (A)

In map production, color separation uses overlays created on transparent sheets, and those overlays are called pulls. A tracing map or part of it is laid out on clear material, and light-blue pulls are used to separate the different color elements for printing. The blue lines stand out against the map’s black ink while being easy to isolate and remove during the separation process, so each color can be reproduced cleanly on its own printing plate. This technique—drawing the features in distinct blue pulls on transparent film to guide the color-separated plates—is what the term pull-up describes. The other options don’t fit because they refer to unrelated processes or tools: photolithography is a broader photographic printing method, a protractor is a measuring instrument, and a representative fraction is a map scale.