Final answer:
The Ayatollah was able to institutionalize the Islamic concept of jurist guardianship through his religious authority and political power.
Step-by-step explanation:
The Ayatollah was able to institutionalize the Islamic concept of jurist guardianship through his religious authority and political power. After the Shah of Iran was overthrown in 1979, Ayatollah Khomeini returned to Iran and established an Islamic republic. The new constitution made Islam the official religion and required all laws to conform to Islamic law. As the Supreme Leader, the Ayatollah had the authority to interpret and enforce Islamic law, thereby institutionalizing the concept of jurist guardianship.