The correct statement about the role of religion in Iran's government is:
D. Iran's government is led by religious leaders and laws must not violate Islamic teachings.
In Iran, the political system is a theocratic republic where the Supreme Leader, a religious figure, holds significant power and authority over the government and its functions. The laws and policies must align with Islamic teachings, as interpreted by the religious leadership. The Guardian Council, which is also composed of religious scholars, is responsible for overseeing elections and ensuring that candidates meet Islamic criteria, further solidifying the intertwining of religion and governance in Iran.