The correct answer is: a) Governor
The Governor is the head of the administrative hierarchy at the state level in Odisha. He/She is appointed by the President of India on the advice of the Central Government. The Governor is the constitutional head of the state and has the power to appoint the Chief Minister, other ministers, judges of the High Court, and the Advocate General. He/She also has the power to dissolve the Legislative Assembly and to reserve bills for the President’s assent.
The Chief Minister is the head of the government in Odisha. He/She is elected by the members of the Legislative Assembly. The Chief Minister is responsible to the Legislative Assembly and has to resign if he/she loses the confidence of the Assembly.
The Chief Secretary is the topmost civil servant in Odisha. He/She is appointed by the Governor on the advice of the Chief Minister. The Chief Secretary is responsible for the administration of the state and is the principal advisor to the Chief Minister.
The Home Secretary is the head of the Home Department in Odisha. He/She is responsible for the maintenance of law and order in the state. The Home Secretary is also responsible for the administration of the police and the prisons.