What significant role did Ethel Lamay Calimese play in Delta Sigma Theta?

Ethel Lamay Calimese is recognized for her significant contribution to Delta Sigma Theta, particularly in the realm of organizational leadership. She played a crucial role in establishing the elections of Regional Directors. This development was pivotal as it allowed for a more structured approach to leadership within the sorority, ensuring that regions were actively represented and could elect representatives who understood their specific needs and challenges. This initiative helped to enhance the sorority's governance and outreach, promoting a more democratic and participatory approach to leadership within Delta Sigma Theta.

The other options pertain to roles that are typically carried out by various governing bodies or the membership at large, rather than a specific individual's initiative or contribution in the same context. Thus, Calimese's work in initiating regional elections stands out as a landmark achievement in the organization's history.