The correct option is D He/She should have practised as an advocate in the High Court for ten years.
To be the Chief Justice of a High Court, a person should be an Indian Citizen. Moreover, he/she should have presided as a Judge for at least ten years in any court in India or he/she should have practised as an advocate in the High Court for ten years. The qualification of 'distinguished jurist' was removed by the 44th Amendment Act of 1978.