Final answer:
Billy, who is ashamed of getting an F, is not expressing a basic emotion. Shame is a complex emotion, unlike happiness, surprise, and disgust, which are basic emotions.
Step-by-step explanation:
The individual who is not expressing a basic emotion is Billy, who is ashamed that he got an F grade on his final exam. Among the basic emotions described by psychologists, shame is not considered a basic emotion but rather a more complex one that involves a sense of self and reflection on how others perceive us.
Basic emotions are typically considered universal and include happiness, surprise, disgust, and anger, as they are immediate responses to stimuli and do not require complex cognitive processing. Therefore, Sarita (happiness), Jessica (surprise), and Kevin (disgust) are all expressing basic emotions.