Who is the head of government according to 1973 constitution

The correct answer is Prime Minister. According to the 1973 Constitution of Pakistan, the Prime Minister is the head of government. The President is the head of state but acts on the advice of the Prime Minister. The Chief Justice is the head of the judiciary and is not involved in executive governance. The Prime Minister leads the cabinet, oversees the executive branch, and is responsible for running the day‑to‑day affairs of the state. Therefore, the Prime Minister is the head of government under the 1973 Constitution.