Final answer:
If you find a mark or defect on an item, acknowledge it, return the item, and exchange it for a new one, preferably with the aid of customer service.
Step-by-step explanation:
If you purchase an item and later notice a defect or mark, it is advisable to acknowledge the mark, take the item back to the store, and exchange it for a new one. This ensures that you receive the value you expected when you made the purchase. When doing so, it's also best practice to contact customer service for assistance, as they can guide you through the exchange process and any policies you may need to be aware of. Always keep your receipt, as it will typically be required for any returns or exchanges.