Final answer:
The legislative body that resulted from the signing of the Magna Carta is Parliament.
Step-by-step explanation:
The legislative body that resulted from the signing of the Magna Carta is the Parliament. The Magna Carta, signed in the year 1215, led to the establishment of the English Parliament. While the Magna Carta itself did not create Parliament, its principles laid the groundwork for the development of representative institutions.
Over time, the monarch's reliance on taxation led to the summoning of representatives from various regions, evolving into the bicameral structure of the English Parliament, consisting of the House of Commons and the House of Lords. Thus, The Magna Carta provided the basis for the development of Parliament, which eventually replaced the king as the real source of power in Britain. Parliament is a representative government led by a prime minister.