Answer: They were all highly educated Catholic officials.
Explanation:
When we talk about the most important figures of the Reformation in Europe, it is important to point out that they were Catholic officials. They had a broad education in several fields, primarily theology. Martin Luther, Jean Calvin, Erasmus of Rotterdam are probably the most famous reformers in Europe. Based on their own moral principles, all three needed to point out the irregularities that were evident in the highest religious institution of the European continent.
