Performance evaluations must be signed in which of the following ink colors?

Performance evaluations are required to be signed in black or blue-black ink to ensure clarity and formality in official documentation. Using black or blue-black ink is a standard practice in many military and organizational settings because it provides a consistent and professional appearance. This color choice helps in ensuring legibility and durability of the signatures on the documents, which is important for maintaining the integrity of performance evaluations.

The use of other colors, such as red or green, is typically avoided in official documents as they can be seen as informal or may not reproduce well in photocopies. Furthermore, colors like purple may not be associated with the seriousness required in performance evaluations. As a result, the established preference for either black or blue-black ink supports uniformity and professionalism in all official military paperwork.