The Magna Carta influenced the separation of church and state because it prohibited the monarch from interfering with the church. Option D is correct.
The Magna Carta is a charter of rights agreed to by King John of England at Runnymede, near Windsor, on 15 June. It promised the protection of church rights, protection for the barons from illegal imprisonment, access to swift justice, and limitations on feudal payments to the Crown, to be implemented through a council of 25 barons.