What is one way a company can be sponsored into the NISP?

The correct choice highlights that the contracting office of a government agency is a key player in sponsoring a company into the National Industrial Security Program (NISP). Government agencies are responsible for determining which companies are eligible to access classified information and require the necessary security clearances. The contracting office ensures that sponsors are aligned with government needs and compliance measures.

In the context of the NISP, it is crucial that a company's involvement is backed by an official entity within the government, which provides the necessary credibility and oversight. This process is designed to safeguard national security by ensuring that only companies meeting stringent security requirements are allowed to engage with sensitive information.

The other options, while they mention potential sources of sponsorship, do not align with the formal structure of the NISP. Sponsorship must come from official government entities to ensure adherence to established security protocols. This underscores the important role of government oversight in maintaining the integrity of the NISP.