Answer :
A problem that occurred within the Catholic Church before the Protestant Reformation was C) Merchant wealth challenged the Church.
How did merchant wealth challenge the Church?
Turning to the wealthy merchants to help fund the Church's maintenance and repairs brought the Church in conflict with this class, whose wealth had earlier been denounced by the Church because of usury.
The Church condemned excessive profiteering or usury by the merchant class. Turning to them for financial support resurrected former disagreements and brought evil consequences.
To solve the problem, the Church decided to offer indulgences for sale. Selling indulgences conflicted with the Church's position on usury.
During this conflict, the Protestant Reformation arose with condemnations of the Church's practices.
Thus, a problem that occurred within the Catholic Church before the Protestant Reformation was C) Merchant wealth challenged the Church.
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