It should be noted that the Reformation was not initially intended to overthrow the Catholic Church, but rather, to reform it. Most see Luther and Zwingli as the first generation of Protestant Reformers and Calvin followed them (many forget about JOHN WYCLIF: The Morning Star of the Reformation). One of the central issues of the Reformation concerned the nature of sacraments as instruments of salvation and expressions of grace. In addition, among the “captivities” of the Eucharist cataloged by Luther in his treatise on the “Babylonian Captivity” were the withholding of bread from the laity. It is known that Luther and Zwingli disagreed about the sacraments. Calvin (who had extraordinary interest in the Sacrament of the Lord's Supper) attempted to strike a somewhat middle path between Zwingli and Luther. Furthermore, for Calvin, the Eucharist is a key component of sanctification. All the Reformers attempted to make the Supper more frequent in the churches as sanctification remained a key issue. Moreover, the Table was seen as a table of unity. The Diet of Ratisbon in order to produce concord between the Catholics and Protestants, had as its main subject – the Eucharist.

The Eucharist is the correct answer.

Reformed and Always Reforming,