The power of the monarchy was reduced as a direct result of the signing of the Magna Carta. Thus, option A is correct.
Manga Karta was a right which was being agreed by the king John who was of England in 1215 this was being done to established that the royal or the monarch would have a limited amount of power and responsibility.
Also that they will have to avoid by the law and their government which do not be considered the law and there would be some kind of democracy that will be established as they cannot use the power of their Royal authority over any being that is deciding over there. Therefore, option A is the correct option.
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