The Advocate General of a state is appointed under which Article of Indian Constitution?

Article 165

The correct answer is Option 3  - Article 165
According to Article 165 of the Constitution, Advocate General is appointed by the Governor of the respective state.

More about the Advocate General :
The Advocate General of a state is mentioned in Article 165 of the Indian Constitution. This article provides for the appointment and duties of the Advocate General for each state in India.
The Advocate General of a state is a constitutional authority who serves as the chief legal advisor to the state government.
The Advocate General is the principal legal officer of the state government. They provide legal advice and guidance to the state government on various matters, including legislative proposals, administrative decisions, and legal disputes.
The Advocate General represents the state government in legal proceedings before courts and tribunals.
The Advocate General is responsible for defending the interests of the state government in legal matters.