The correct answer is (c), Governor.
The Lok Ayukta of Uttar Pradesh is an anti-corruption ombudsman who investigates allegations of corruption against public servants in the state. The Lok Ayukta submits his reports to the Governor of Uttar Pradesh, who is the head of state. The Governor then takes appropriate action on the reports, such as ordering an inquiry or taking disciplinary action against the accused public servant.
The other options are incorrect. The Chief Minister is the head of the government in Uttar Pradesh, and the Chief Justice of the High Court is the head of the judiciary in the state. The Speaker of the Legislative Assembly is the presiding officer of the Legislative Assembly of Uttar Pradesh. None of these officials have the authority to take action on the reports of the Lok Ayukta.