What is a primary feature of new California driver licenses?

The primary feature of new California driver licenses that makes option B the correct answer is the incorporation of a holographic image. This holographic element serves as an advanced security measure designed to combat counterfeiting and ensure the authenticity of the driver's license. The holographic image not only enhances the visual appeal of the license but also provides law enforcement and other agencies with a reliable method to verify its validity upon inspection.

This feature reflects modern advancements in technology used for identification and helps maintain the integrity of the identification process in a digital age. It ensures that while personal information is maintained, the risk of fraudulent activities is minimized, thus contributing to overall public safety.

While options like the bold printing of the date of birth, the magnetic strip, and the allowance for multiple identities touch on aspects of identity verification and personal information management, they do not represent the enhanced security feature that the holographic image provides in contemporary driver licenses.