Which SCI control system is specifically designed to protect human intelligence?

The correct choice is designed to specifically protect human intelligence sources and methods. This control system focuses on safeguarding sensitive information derived from human interactions or intelligence gathering. Human intelligence, or HUMINT, often involves personal contacts and sources. Therefore, the control measures associated with this system are tailored to address the unique operational requirements and challenges of preserving the confidentiality and integrity of information that originates from human sources.

In this context, the other options refer to different classifications or control systems. For instance, one could be focused on other types of intelligence like signals or imagery, while another option may pertain to broader security measures rather than a specific focus on human intelligence. The distinction made by the correct choice highlights the necessity for specialized protocols to effectively manage the risks associated with HUMINT operations. Thus, choosing the option that specifically targets human intelligence ensures that security practices are appropriately aligned with the nature of the intelligence being handled.