What is the annual refresher briefing required for?

The annual refresher briefing is specifically required to reinforce policies regarding classified information. This training ensures that personnel handling sensitive data are consistently reminded of the regulations and procedures surrounding the protection of classified information. The refresher serves as an important tool to refresh and update employees' knowledge and compliance with safeguarding protocols, which is essential in maintaining national security and preventing unauthorized disclosures.

By regularly addressing the policies related to classified information, organizations can mitigate risks, promote awareness of potential threats, and establish a culture of security within the workplace. This understanding helps employees recognize their responsibilities and the significant consequences of mishandling sensitive data.

The other options do not focus specifically on the critical aspect of safeguarding classified information required by regulations, making them less appropriate for context in this scenario.