Final answer:
The most likely outcome of the decline stage of a social movement is the organization falling apart.
Step-by-step explanation:
The most likely outcome of the decline stage of a social movement is A. The organization falls apart. During this stage, a social movement starts losing momentum, support, and resources, which can ultimately lead to the dissolution of the organization. The decline stage is characterized by a decrease in public attention and participation, making it difficult for the movement to sustain itself.
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