What is a key contribution of Leone Baxter in the field of public relations?

Leone Baxter's key contribution to the field of public relations is significant because she was the first woman to run a public relations agency. This milestone not only marked a breakthrough for women in a profession that was predominantly male at the time but also set a precedent for future generations of women in the industry. Baxter's leadership and innovative approach to public relations helped to establish the field as a professional practice with standards and methodologies that could effectively serve clients in a range of sectors.

Her agency became known for its skillful handling of political campaigns and public affairs, demonstrating the impact that well-executed public relations strategies could have on public perception and engagement. This accomplishment is particularly noteworthy in the context of the evolving landscape of public relations, where the diversification of leadership has continued to shape the industry.

The other options, while relevant to the field of public relations, do not accurately reflect Baxter's pioneering role as a female leader within the industry at that time.