Which government official had their Secret Service protection revoked by Trump?

The correct choice is Kamala Harris, as her Secret Service protection was notably a topic of discussion during the transition period when Trump was still in office. Normally, the Vice President and former presidents have Secret Service protection to ensure their safety. However, during the final days of Trump's presidency, there was a decision influenced by political context regarding the level of security for various officials. Kamala Harris, as the incoming Vice President, drew attention when it was mentioned that the transition of security was under scrutiny during this period.

This situation reflects ongoing debates about security measures for government officials, especially in a highly polarized political climate. The other individuals listed did not have their protection revoked or were not in the same position during the transition period, which is why the focus remained on Harris for this specific scenario.