The Peace of Westphalia weaken the Catholic Church's power since it recognized the right of kingdoms to practice Protestantism. Option A is correct.
The Peace of Westphalia constituted a series of peace treaties signed between May and October 1648 in the Westphalian cities of Osnabrück and Münster, which culminated the European wars of religion, such as the Thirty Years' War. The treaties of Westphalia put an end to a period of European history which claimed the lives of roughly eight million people.
