Answer :
During the "Diet of Worms," the issue of communion caused the Protestant movement's cohesiveness to disintegrate. Option A
This is further explained below.
What was the Worm Diet?
The Edict of Worms in 1521 was sometimes referred to as the Diet of Worms. It made reference to the Holy Roman Empire's imperial diet that Charles V summoned at the Imperial Free City of Worms. In response to a papal bull issued by Pope Leo X, Martin Luther Jr. was one among those called upon to reject or reaffirm his beliefs.
The Emperor's Edict of Worms, which labeled Luther as "a known heretic" and forbade Empire subjects from promoting his ideas, was issued as a result of Luther's defense of his beliefs and refusal to renounce them.
As a consequence, the Protestant movement's unity over the issue of communion broke broken.
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