What must a released promisor do regarding other joint promisors?

The correct answer focuses on the responsibilities of a released promisor in relation to other joint promisors. When a promisor is released from their obligations under a contract, they still have a duty to compensate the other joint promisors. This is because the release does not absolve them of their responsibilities towards their co-promisors to ensure that the contractual obligations are fulfilled.

In contractual agreements, particularly those involving multiple parties, the principle of joint liability typically implies that all parties are collectively responsible for the complete performance of the contract. If one promisor is released but the duties still remain for others, that released party may need to support their co-promisors by compensating them for any losses incurred because of their release.

The other choices do not appropriately characterize the responsibilities of a released promisor. For instance, simply being released from obligations does not mean they are free from all liability towards other joint promisors. Retaining liability for the full contract amount is also incorrect since the released promisor is no longer responsible for the contract collectively. Additionally, refusing to communicate with the other promisors does not align with the expectations of collaboration and mutual support typically expected in joint contractual obligations.

Hence, the emphasis on the necessity for the released promisor to