The right to choose one’s own religion in the holy roman empire was granted by the a.. diet of worms. c.. edict of nantes. b.. peace of augsburg. d.. huguenot conference.

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The Diet of Worms was the ultimatum to Luther abandons up their ideas. The Edict of Nantes was signed to keep the peace in France at the end of the sixteenth century. The Huguenot conference did not guarantee freedom of religion and therefore the answer is the Peace of Augsburg, where an agreement has ensured relative peace between Catholics and Protestants.