Final answer:
Isabella, who prioritizes authenticity and not adhering to a specific leadership style, would be described as an authentic leader.
Step-by-step explanation:
Isabella, who has decided not to model herself after a specific leadership style and aims to be authentic, would likely be described as D) An authentic leader. Authentic leaders are those who are true to themselves and their values rather than conforming to traditional leadership models or styles. They are known for their transparency, ethical behavior, and strong sense of self. This approach aligns with Isabella's decision to be genuine rather than adopting a predefined leadership style, such as transformational, transactional, or servant leadership.