Which association is represented by the acronym MDA?

The correct association represented by the acronym MDA is the Muscular Dystrophy Association. This organization is well-known for its mission to support individuals affected by muscular dystrophy and related diseases. The MDA focuses on funding research, providing support services, and advocating for individuals with these conditions.

The Muscular Dystrophy Association plays a critical role in raising awareness, funding research for treatment and cures, and providing resources for those affected and their families. This distinction makes it the recognized and accurate representation of MDA within the medical and health communities.

The other options do not represent any widely recognized organizations, which highlights why the Muscular Dystrophy Association is the correct answer in this context.