Answer:
C. Many kings saw the Reformation and its popular support as a way to strengthen their own political authority.
Step-by-step explanation:
The Reformation was a religious movement that protested against several rules and practices within the Catholic Church. These protests caused a schism into the church and eventually created the various Protestant churches.
When the Catholic church lost part of its power with the creation of a new religion that “competed” with it, many kings saw it was an opportunity to gain and strengthen their political authority. Soon Lutheranism became the main church of several princes that wanted to impose that doctrine on their subjects since the Catholic Church had enormous power.