The Government of the Hong Kong Special Administrative Region maintains previous systems for which of the following fields?

The correct answer is that the Government of the Hong Kong Special Administrative Region maintains previous systems for medicine and healthcare. This reflects the continuity in the healthcare practices and infrastructure that were established prior to the establishment of the HKSAR following the 1997 handover. The healthcare system has remained consistent, benefiting from a blend of public and private services that were in place, allowing for a relatively high standard of medical care.

In the context of the other options, while transportation and commerce, sports and entertainment, and technology and innovation have seen systems and policies evolve, they do not have the same level of continuity or preservation of previous systems compared to medicine and healthcare. In the former fields, there has been significant change to align with broader governance goals and national policies since 1997, but the framework for healthcare has maintained a more stable approach, ensuring ongoing access and services that serve the public effectively.