The correct answer is false.
It is false that though Martin Luther was a driving factor in the decline of Spain’s power, King Charles V was eventually able to bring him down.
What King Charles V did was to hold an assembly in Worms, Germany, and issued the Edict of Worms to analyze the effects of the Reformation Movement led by Martin Luther. The assembly of Worms was held from January 28 to May 25, 1521.