__ wanted to purify or reform the Catholic Church.SeparatistsJewsQuakersPuritans

The group that wanted to purify or reform the Catholic Church was the Puritans.

Detail Explanation: The Puritans emerged in the late 16th and 17th centuries as a reform movement within the Church of England. They sought to eliminate practices they considered corrupt and to create a more personal and sincere form of worship that aligned closely with their interpretation of the Bible. This involved a desire for greater moral discipline and the establishment of a simpler worship style.

While the Separatists also sought to distance themselves from the Church of England, their approach was more about separating entirely rather than reforming it. Jews and Quakers had different theological positions and aims within the religious landscape of the time. Therefore, the Puritans are the correct answer in the context of those who wanted to purify or reform the Catholic Church.