which was not an event that occurred before the split of the catholic church and led to its weakening?\na…

which was not an event that occurred before the split of the catholic church and led to its weakening?\na catholic church abolishing slavery.\nb an increase in the selling of indulgences.\nc disputes over political power between monarchs and the pope.\nd increased spending and building projects of the catholic church.
Answer
Brief Explanations:
The Catholic Church abolished slavery in 1839, which was long after the Protestant Reformation (the split). The selling of indulgences (B), disputes over political power (C), and increased spending (D) were all factors that contributed to the weakening of the Catholic Church before the split.
Answer:
A. Catholic church abolishing slavery.