Final answer:
Callie's personality traits such as her focus on individual goals and perfectionism suggest a high need for achievement, as those with this need are motivated by an internal drive for success and set challenging goals for themselves.
Step-by-step explanation:
Based on Callie's personality traits of being focused on her goals, individualistic, and a tendency to be a perfectionist, she likely has a high need for achievement. A person with a high need for achievement is typically characterized by a strong desire to set and accomplish challenging goals, take calculated risks, and prefers to work alone or with other high achievers. Such individuals are often motivated by an internal drive for success, rather than external rewards or social factors such as power or affiliation.