UGC NET History Q4

Question

Read the following paragraph and give answer to the related questions.
The Reformation was a declaration of the liberty of the individual conscience, and a shift on the basis of authority from the church to the Bible. Martin Luther (1483-1546), the first protagonist of the Reformation, made much of the doctrine of justification by faith. He was not a consistent theologian. Ulrich Zwingli (1484-1531), the leader of reformation in Switzerland, departed more widely from the Latin church in thought. He revived from another point of view. Augustine's doctrine of election. John Calvin (1509-1564), formed the most complete system of theology, going to protestantism its fighting armour. To him as to Augustine god was an absent sovereign. He differed from Augustine in finding the will of God expressed in the Bible rather than in the church.
This reformer, according to the author, formed the most complete system of theology, giving to protestantism its fighting armour. Identify the reformer

Accepted Answer

St. Aquines