What is the purpose of using a paper punch during inspections?

The use of a paper punch during inspections primarily serves the purpose of voiding out stickers. When an inspection sticker is punched, it indicates that the sticker is no longer valid and prevents it from being reused. This practice ensures that each sticker is uniquely tied to a specific inspection and maintains the integrity of the inspection process, allowing only valid, unexpired stickers to be displayed on vehicles. Voiding out stickers helps in preventing fraudulent use or duplication, thus upholding the safety inspection system's credibility.

While other options may seem relevant, they do not align with the established purpose of a paper punch in the context of inspections. For instance, marking completed inspections would typically be done through documentation rather than with a paper punch. Creating identification marks may involve other methods of labeling or tracking and is not specifically associated with the role of a paper punch. Testing sticker adhesives is also out of scope for the function of the punch, which is aimed at voiding stickers, not evaluating their adhesive properties.