Which authority does the Contracting Officer use to delegate contracting responsibilities?

The correct answer is based on the formal process through which contracting responsibilities can be assigned. A designation letter serves as an official document that outlines the specific duties and authorities delegated to the Contracting Officer's Representative (COR). This letter not only specifies what responsibilities are being delegated but also ensures that both the COR and the contractor understand the scope of the COR’s authority.

The designation letter is critical because it solidifies the relationship and expectations between the parties involved. It includes the necessary signatures and complies with applicable regulations, making it a valid and legally recognized means of delegation. This level of formality is essential in the contracting process, as it helps maintain accountability and clarity in roles.

In contrast, other options lack the required formality or legal standing. An internal memo may outline assignments but does not carry the weight of a designation letter. A verbal agreement lacks a record and can lead to misunderstandings, while a formal announcement in an agency newsletter does not provide individuals with direct authority or specific responsibilities. Thus, the use of a designation letter is the appropriate and standardized method for delegating contracting responsibilities effectively.