Answer:
The men attributed the arousal caused by the swaying bridge to the attractiveness of the confederate.
Explanation:
Two-factor theory: In psychology, the two-factor theory of emotion is also referred to as "Schachter's Two-Factor Theory of Emotion", and was proposed by Stanley Schachter. He believed that an individual's emotions are based on two parts or factors including a cognitive label or physical arousal, and both of the elements should be present for an individual to experience an emotion.
In the question above, the two-factor theory was supported when the men attributed the arousal caused by the swaying bridge to the attractiveness of the confederate.