Before sending a draft classified document containing handwritten notes outside your activity, what must change?

The correct choice emphasizes the importance of adhering to the established guidelines for marking classified documents. Adding portion markings is crucial because it ensures that the document meets the criteria for proper classification handling, particularly when distributing sensitive information outside of your activity. Portion markings help identify which parts of the document are classified and indicate the level of classification for each section. This not only helps in protecting sensitive data but also assists the reader in understanding the specifics of the classification.

By ensuring that portion markings are in place, you facilitate better compliance with security protocols, allowing others to handle the information correctly while avoiding any potential exposure of classified content that may be less sensitive. This action is part of maintaining the integrity and security of classified information throughout its lifecycle.