Ekman and Friesen (1975)analyzed hundreds of films and photographs of people experiencing various emotions.On the basis of this analysis, they concluded that

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Ekman and Friesen (1975) concluded that there are six primary facial expressions of emotion based on their analysis of hundreds of films and photographs of people experiencing various emotions. Additionally, they found that all facial expressions of emotion are mixtures of these six primary expressions. Therefore, both option A and B are correct. Option C is incorrect because Ekman and Friesen were able to categorize facial expressions into primary categories. Option D is incorrect because shame, desire, and excitement are not considered primary emotions according to Ekman and Friesen's research.

Ekman and Friesen (1975)analyzed Hundreds of Films and Photographs of People