The correct answer is B) political and economic reasons.
In addition to an interest in religious reform, the princes of Germany supported Martin Luther's ideas for political and economic reasons.
The princes of Germany found in the ideas of Martin Luther not only the ideological principles to set aside the Catholic Church but political and economic reasons to solidify the Reformation of Germany. This way, the princes suppressed the Peasant's rebellion in the Knight's War (1522-1523). Martin Luther opposed the peasant's cause and demanded to act swiftly against them.
