Answer : 4. "He has the voting right in the state legislature."
Explanation :

State Advocate General: The State Advocate General is the chief legal advisor of the state government. He is the primary counsel for the state government in the High Court for the state. He shall hold office during the pleasure of the Governor and shall receive such remuneration as may be fixed by the Governor. Hence statement 2 is correct. He is a part of the state executive. He is appointed by the Governor of the state. He holds his office according to the wishes of the Governor. He has the right to be heard in any court of the state. Statement 1 is correct. Eligibility: He must be an Indian citizen. He must be a person qualified to be appointed as a Judge of a High Court. Powers and functions: Advising the Government of India in legal matters. He also performs other legal duties assigned to him by the Governor. They have the right to be heard in all courts of the State as well as the right to participate in the proceedings of the State Legislature without voting. Hence, statement 3 is not correct. He appears on behalf of the State Government in the High Court in all matters which relate to the State Government.