Which statement about laser etching is true?

Which statement about laser etching is true?

• A. It is the newest permanent marking method
• B. It is the oldest method
• C. It is used only for temporary marking
• D. It does not require any setup

Answer: (A)

Laser etching works by focusing a laser to locally alter or remove material, creating a mark that is durable and resistant to wear. Because of this permanence, laser etching is considered a permanent marking method. In the context of the options, it’s described as the newest permanent marking method, reflecting its modern adoption compared with older marking techniques such as stamping or chemical methods. It does require setup—calibrating laser power, speed, focus, and safety measures—so a statement claiming no setup is needed isn’t correct. It’s not used only for temporary marking, and it isn’t the oldest method.

Laser etching works by focusing a laser to locally alter or remove material, creating a mark that is durable and resistant to wear. Because of this permanence, laser etching is considered a permanent marking method. In the context of the options, it’s described as the newest permanent marking method, reflecting its modern adoption compared with older marking techniques such as stamping or chemical methods. It does require setup—calibrating laser power, speed, focus, and safety measures—so a statement claiming no setup is needed isn’t correct. It’s not used only for temporary marking, and it isn’t the oldest method.