Final answer:
The opening of an adjustment letter should acknowledge the customer's claim and indicate the intent to address the issue, setting a positive and customer-focused tone for the correspondence.
Step-by-step explanation:
When writing an adjustment letter in response to a customer's claim, the opening should be clear and direct. You'll want to acknowledge receipt of the customer's claim and indicate that you are writing to address their concerns. An effective opening might start with expressing thanks for the customer's feedback or for bringing the matter to your attention, followed by a brief mention of your intention to resolve the issue mentioned in their claim. This sets a positive tone for the rest of the correspondence and conveys that customer satisfaction is a priority.