Final answer:
An invoice for a bad debt should not be voided or deleted but instead written off as a bad debt expense for accurate record-keeping and reflection of financial status.
Step-by-step explanation:
The statement that an invoice for a bad debt should NOT be voided or deleted is true. When a business encounters a bad debt, it means that the amount owed by a customer is determined to be uncollectible. Rather than deleting the invoice, the correct accounting procedure is to write it off as a bad debt. This means creating a bad debt expense in the income statement and reducing the accounts receivable on the balance sheet by the same amount. This approach allows the business to maintain accurate records of all transactions and also properly reflects the expense related to uncollectible debts.