Which agency is listed as providing staff assistance to the Secretary of Defense?

• A. Space Weather Service
• B. Threat Reduction Agency
• C. Security Service
• D. Defense Logistic Agencies

Answer: (B)

The agency that provides staff support to the Secretary of Defense is the one focused on countering weapons of mass destruction and guiding related threat-reduction efforts. This agency serves as a direct source of policy advice, program oversight, and coordination for senior leadership, which is exactly what staff assistance to the Secretary entails. The other options do not fit this role: a space weather unit isn’t a formal staff office for the Secretary, “Security Service” is too vague to be a defined DoD staff entity, and the Defense Logistics Agency concentrates on logistics and supply rather than providing direct senior-level staff support.