Who is the person to whom a promise owes an obligation, which is discharged if the promisor performs?

The correct answer is that the person to whom a promise owes an obligation, which is discharged if the promisor performs, is known as the obligee. In contractual relationships, the obligee is the party that receives the benefit of the obligation. When the promisor fulfills their promise or obligation, the duty owed to the obligee is satisfied, thereby discharging the promisor's responsibility.

In this context, it is important to clarify that while a creditor beneficiary might be someone who benefits from a promise made by a promisor to a third party, the term specifically refers to a different scenario in the context of third-party beneficiaries. The other terms, debtor and grantor, relate to specific roles in financial or legal transactions but do not pertain directly to the obligation described in the question. Therefore, the focus should remain on the relationship where the obligation is directly owed to the obligee, making them the correct choice in this scenario.