The correct answer is A. Chief Minister.
The Chief Minister is the head of the executive branch of the state government. He/She is responsible for the day-to-day administration of the state and for implementing the policies of the government. The Chief Minister is also the leader of the party or coalition that has a majority in the state legislature.
The Council of Ministers is a body of ministers who are appointed by the Chief Minister and help him/her in the administration of the state. The Council of Ministers is responsible for formulating and implementing the policies of the government.
The Governor is the head of state of the state. He/She is appointed by the President of India. The Governor has the power to appoint the Chief Minister and the Council of Ministers. He/She also has the power to dissolve the state legislature and to appoint the Chief Justice of the High Court.
The Chief Justice of the High Court is the head of the judiciary in the state. He/She is appointed by the President of India. The Chief Justice of the High Court has the power to hear appeals from the lower courts and to decide on the constitutionality of laws.
In conclusion, the Chief Minister is the person who uses the real executive powers of the state. He/She is responsible for the day-to-day administration of the state and for implementing the policies of the government.