Which body conducts fraternity business for Sigma Alpha Iota?

The correct choice is the National Executive Board, as this body is responsible for conducting the business of Sigma Alpha Iota at the national level. The National Executive Board is made up of elected members who are devoted to overseeing and implementing the policies and direction of the fraternity. They handle administrative functions, strategic planning, and overall governance of the organization, ensuring that the fraternity operates effectively and fulfills its mission.

While the National Council also plays a role in leadership, it is a specific committee that focuses on particular areas or issues within the fraternity rather than being the overarching governing body. The Alumnae Association primarily focuses on the interests and activities of former members of Sigma Alpha Iota, and the Chapter Advisory Board provides support and guidance to local chapters but does not conduct affairs at the national level.