Which of the following actions is NOT permissible for government personnel regarding contract modifications?

The correct response highlights a key principle in government contracting regarding how contract modifications must be handled. When government personnel direct contractors to perform additional work without modifying the contract, it can lead to significant complications, including potential legal issues regarding payment and scope of work. Contracts are legally binding documents that outline specific terms and conditions, including the scope of work to be performed. Any significant changes or additional work requirements should be formalized through a contract modification to ensure that both parties agree to the updated terms and that implications such as procurement regulations and budget constraints are appropriately addressed.

Options such as executing contract modifications, advising contractors on compliance, and authorizing changes within the scope of the contract are all permissible actions. These actions align with the established procedures that uphold the integrity of the contracting process and maintain proper oversight. By formally executing modifications or changes, both the government and the contractor have a clear understanding of the obligations, rights, and expectations under the contract, minimizing the risk of disputes.