Concept:Judicial independence means judges must be free from external control, especially from the executive.
Explanation:Immunity from prosecution protects judges while carrying out their duties.
Promotion on merit encourages fairness and professionalism in the judiciary.
Security of tenure ensures judges cannot be removed easily for doing their duty.
However, if the executive determines judicial salaries, it can use financial control to influence judges.
This weakens judicial independence instead of protecting it.
Answer:D. salary determined by the executive.