The answer choice which accurately describes the main cause of the iconoclast controversy of the eighth and ninth centuries was c) Iconoclasts believed it was blasphemy to worship religious objects. This banned all icons of religion in the Christian religion and the persecution of supporters who believed in the veneration of religious icon. This was a period during the Byzantine Empire.
The Magna Carta lead to the creation of the English Parliament, as well as the House of Commons and the House of Lords, if I recall correctly. Hope that helped.