What must be tracked on training certificates issued by BSIS?

The correct answer focuses on the requirement that training certificates issued by the Bureau of Security and Investigative Services (BSIS) must include serial numbers for tracking purposes. This provision ensures that the certificates can be uniquely identified and verified, which helps maintain the integrity of the training process. By employing serial numbers, BSIS can accurately monitor and audit the training programs conducted by security training providers.

Tracking with serial numbers helps in maintaining a reliable record of the training completed by individuals, which is essential in the regulation of security personnel in California. These measures prevent fraud and enhance accountability within the private security industry. This system allows for straightforward access to a training history, which can be crucial during the licensing process or when verifying someone's credentials.

The other options, while they may pertain to various aspects of training sessions, do not fulfill the specific requirement set by BSIS for certification tracking. Maintaining proper documentation is key to ensuring compliance with regulatory standards, which is why serial numbers play a critical role in this context.