Which of the following describes the liabilities of Dan as a retiring partner?

The assertion that Dan remains liable to new customers who knew he was a member of the partnership, unless he declared his withdrawal, accurately reflects the principles of partnership law. When a partner retires from a partnership, their liability does not automatically cease in situations where third parties, particularly new customers, are involved. If a new customer was aware that Dan was previously a member of the partnership, he may still be held responsible for obligations arising from transactions during the time he was a partner, especially if there was no formal communication of his retirement to those customers.

This liability persists unless Dan has effectively communicated or formally declared his withdrawal from the partnership. This approach protects the interests of new customers who might have relied on the reputation or standing of all partners in the firm at the time of the transaction.

On the other hand, while the other statements address certain aspects of partnership liability, they do not fully encapsulate the nuances related to the transition of a partner's obligations upon retirement. For example, while some may point out the consideration of debts accrued prior to retirement, the focus here is primarily on the awareness of new customers and the formal steps taken to notify them of the change in partnership status, which is critical to determining ongoing liability.