Final answer:
The Cognitive Appraisal theory emphasizes the physiological experience of emotion the least, as it focuses more on cognitive processes preceding emotional responses.
Step-by-step explanation:
The question seeks to identify which theory emphasizes the physiological experience of emotion the least. Among the options provided, the Cognitive Appraisal theory places the least emphasis on physiological responses when experiencing emotions, instead focusing on the role of individual interpretation and thought processes before emotional responses occur. This is distinct from the James-Lange and Schachter-Singer two-factor theories that both emphasize physiological arousal as a key component in the experience of emotions, albeit combined with cognitive factors in the case of the latter. The Cannon-Bard theory does not prioritize physiological arousal as primary but still considers it a central component occurring simultaneously with emotional experiences.