Which of the following is a Cognizant Security Agency within the NISP?

The Director of National Intelligence (DNI) is recognized as a Cognizant Security Agency within the National Industrial Security Program (NISP) because it is responsible for overseeing and coordinating the security of classified information across various government agencies. The primary role of the Cognizant Security Agency is to ensure that contractors involved with the government maintain compliance with security policies related to classified materials. The DNI, particularly through the Office of the Director of National Intelligence, has the authority to implement national security policies that affect classified information handling, making it a key organization in this domain.

In contrast, the other entities listed, such as the Environmental Protection Agency, Department of Transportation, and Federal Bureau of Investigation, have distinct roles and duties that do not specifically include oversight of classified information security within the NISP context. While these agencies may interact with or handle classified data in specific circumstances, they do not serve as Cognizant Security Agencies in the NISP framework.