The correct answer is: B. Governor
The Governor of a state appoints the members of the State Information Commission. The State Information Commission is an independent body that is responsible for ensuring the implementation of the Right to Information Act in the state. The Commission has the power to investigate complaints against public authorities, and to order them to disclose information that is being withheld.
The Chief Justice of High Court is the head of the High Court, which is the highest court in a state. The President is the head of the country, and the Prime Minister is the head of the government. None of these officials have the power to appoint the members of the State Information Commission.