Which part of english society was completely exempted from restrictions under the magna carta ?

The correct answer is the Church

The church always answered to the Pope, not to the kings. They couldn't be regulated through the Magna Carta since the king didn't have any jurisdiction over them. This was the reason why many times popes and kings clashed over who reigns supreme in what area since Kings based their power on politics while the church on religion.

Under Clause 1, the church was exempted from the Magna Carta. The nobles made clear that the church should be free from interference of the king and nobility. An interesting point was that the nobles explicitly included the phrase “for us and our heirs forever,” which means that they envisioned no point when government should be involved in the affairs of the church. This can be seen as a precursor to the philosophy regarding separation of church and state that emerged in the Enlightenment.

Explanation:

d.summerains, the last one