Correct Answer: (a) a law passed by the Parliament
Solution:A common High Court for two or more state can be established by a law passed by the Parliament. As per the Constitution of India, Articles-214-231 deals with the provisions of the High Courts in India. At present, we have 25 High Courts in the country, which includes 7 common High Courts.
These are Bombay High Court, Calcutta High Court, Madras High Court, Gauhati High Court, Kerala High Court, Punjab and Haryana High Court and Jammu and Kashmir High Court,
Article-217 deals with the appointment of judges.
Article 231 of our Constitution states that Parliament by law establish common high courts for two or more states or for two or more states and a Union Territory. This provision was brought by Seventh Amendment Act, 1956.