Research has shown that individuals from the United States express negative emotions like fear, anger, and disgust both alone and in the presence of others, while Japanese individuals only do so while alone. This finding suggests that people from different cultures are most likely to differ with respect to a. the way they categorize basic emotions such as fear and anger. b. the specific states of physiological arousal associated with their feelings of happiness or disgust. c. their facial expressions of different emotions such as sadness or surprise. d. cultural display rules of emotion.