Final answer:
The unrelated statement in the Superdome story is about the effectiveness of security measures, which is not associated with emergent-norm theory or social control.
Step-by-step explanation:
The statement that does NOT belong with the Superdome story about breaking in line, which illustrated the importance of maintaining order in crowded situations, the consequences of unethical behavior during emergencies, and the role of social norms in shaping individual behavior, is: C) The effectiveness of security measures in preventing rule violations.
Emergent-norm theory, developed by sociologists Ralph Turner and Lewis Killian, suggests that crowds can develop new guidelines on how to behave in the absence of established norms. This perspective emphasizes that crowds are not inherently irrational or impulsive; instead, they can develop their own set of norms suitable for the particular situation. Social control is the regulation and enforcement of these norms with the purpose of maintaining social order. Examples of how enforcement can vary widely among different social norms, with some highly valued behaviors being more strictly enforced than others, demonstrate this concept.
Therefore, while the other statements (A, B, and D) directly relate to the principles of emergent-norm theory and social control, statement C is unrelated as it addresses the practical implementation of security measures rather than the sociological aspects of crowds and norms.