Final answer:
Sadness is the emotion Rukami displays when he finds Nathan during the festival. The terms happiness, sadness, fear, disgust, anger, surprise, and contempt are listed as universal emotions, not melancholy.
Step-by-step explanation:
The correct answer to the question is sadness. Sadness is the emotion Rukami displays when he finds Nathan during the festival. The terms happiness, sadness, fear, disgust, anger, surprise, and contempt are listed as universal emotions, not melancholy.
The other emotions listed as universal emotions in the referenced chapter are contempt, disgust, and anger. The term 'melancholy' is not mentioned as one of the seven universal emotions that the chapter describes.
Psychological studies on facial expressions and emotion, often associated with the work of psychologist Paul Ekman, identify seven universal emotions: happiness, sadness, fear, disgust, anger, surprise, and contempt. Melancholy might be considered a form of sadness, but it is not classified as a separate and distinct universal emotion.