What are the different methods of applying codes?

• A. Embossing
• B. Lithographing
• C. Stamping
• D. Embossing; Lithographing; Stamping

Answer: (D)

Codes can be applied in several ways, chosen based on the material and how durable or visible the mark needs to be. Embossing leaves a raised impression on the surface, which is useful for a durable, tactile code without using ink. Stamping uses a die to press an imprint, often with ink, producing a clear, legible mark suitable for many materials and surfaces. Lithographing is a printing method that transfers ink from a plate to the surface, enabling precise, multi-character codes on labels or packaging. Because codes can be applied by any of these methods depending on the context, the option that lists all three—embossing, lithographing, and stamping—best covers the range of techniques that can be used.