What program, established under Executive Order 12829, aims to protect classified information related to federal contracts?

The National Industrial Security Program (NISP) is the correct choice as it was specifically established under Executive Order 12829 to protect classified information in the context of federal contracts. The NISP was designed to ensure that companies and contractors involved with the government can effectively safeguard classified materials in their possession, thereby ensuring national security interests are maintained.

This program outlines the responsibilities of both the government and private industry in protecting classified information. It encompasses various aspects of industrial security, including employee screening, facility clearance, and the appropriate handling and dissemination of classified materials.

The NISP serves as a framework through which cleared contractors must operate, aligning their security practices with federal requirements to prevent unauthorized access to sensitive information. This relevance and focus on the protection of classified information in contract situations make it the most fitting choice in this context.