Final answer:
Lucy is using the internal perspective to explain Daisy's behavior.
Step-by-step explanation:
Lucy is using the internal perspective to explain Daisy's behavior. The internal perspective focuses on individual characteristics and traits as the primary determinants of behavior. Lucy believes that Daisy's desire to excel at work is a personal quality that has led to her success. This perspective emphasizes internal factors such as personality traits and motivation when attempting to understand and explain human behavior.