Judges and other members of the judiciary serving in Hong Kong before the establishment of the Hong Kong Special Administrative Region may all remain in __________ and retain their seniority with pay, allowances, benefits, and conditions of service no less favorable than before.

The provision that allows judges and other members of the judiciary serving in Hong Kong before the establishment of the Hong Kong Special Administrative Region to remain in their positions aligns with the principle of maintaining continuity in the legal and judicial system during the transition period. The emphasis on retaining their seniority, pay, allowances, benefits, and conditions of service no less favorable than before underscores the commitment to uphold the rule of law and ensure stability within the judiciary.

"Employment" is the most fitting term because it encompasses the broad range of roles and responsibilities held by judges. It ensures that these individuals can continue their judicial functions without interruption, safeguarding legal continuity and confidence in the judiciary during the transition period to the new governance structure.

The other terms, while relevant in different contexts, do not capture the full essence of the arrangement provided for judges in this specific legal context. "Practice" typically refers to the professional activity of lawyers rather than judges. "Retirement" implies the cessation of duties and would not fit the context of continued service. "Service" alone could be seen as too vague, as it does not explicitly emphasize the employment aspect crucial to the ongoing roles of judges. This highlights why "employment" is the most appropriate choice regarding the ongoing status of judges post-establishment