What is one specific function of the Marine Corps?

One specific function of the Marine Corps is to maintain security of naval property at naval stations and bases. This responsibility is critical because the Marine Corps is part of the Department of the Navy, and ensuring the protection and security of naval installations is vital for operational readiness and the safety of personnel and equipment. This function contributes to the overall mission of the Department of Defense by safeguarding vital resources and infrastructure that support maritime operations. The Marine Corps plays a key role in ensuring that such facilities operate effectively, thereby enhancing the nation's defense capabilities.

The other options pertain to functions that are not typically within the scope of the Marine Corps. Conducting nuclear operations generally falls under the purview of other branches of the military that are specifically tasked with nuclear capabilities. Providing air support for civilian matters is usually managed by different organizations and units outside of the Marine Corps' primary combat and operational focus. Similarly, developing space exploration strategies is largely a function of space agencies like NASA and does not align with the core responsibilities of the Marine Corps.