Question

3. One of the main complaints about the Catholic Church was the sell of ___________________ in which people thought they were buying forgiveness for their sins.

Answer 1

 indulgences, the selling of indulgences  might also be the right answer

Answer 2

Indulgences - were sold for the forgiveness of sins. In the Middle Ages the Catholic Church abused this. The Protestant Reformation began because of this - led by Martin Luther.