Which of the following requirements must be met for co-op properties under NACA?

For co-op properties under NACA, the requirement that they are only available in specific states such as Connecticut and New York reflects the unique nature of cooperative housing and the NACA program's focus. Co-ops are primarily concentrated in these areas, where the cooperative housing model has seen more adoption and is commonly utilized. This geographical limitation ensures that NACA's resources and support are directed toward locations with established co-op markets, thereby enhancing the likelihood of successful engagements and homeownership experiences for members.

Additionally, the criteria regarding nationwide availability, adherence to the same requirements as single-family homes, and ownership duration do not correctly portray the constraints placed on co-ops under the NACA program. Therefore, the emphasis on the specific states illustrates the tailored approach NACA takes in addressing the needs of communities where co-ops are prevalent.