Which of the following interdisciplinary studies would NOT be considered under the social sciences?

Molecular biophysics is primarily a branch of the natural sciences, specifically focused on the physical principles underlying biological processes at the molecular level. It integrates biology, chemistry, and physics to understand and manipulate biological macromolecules. This scientific perspective contrasts with the social sciences, which explore human behavior, societies, and cultural structures.

In contrast, peace studies, African-American studies, and cartographic information systems all examine societal issues, relationships, and human interactions, placing them firmly within the realm of social sciences. Peace studies analyze conflict resolution and the social conditions promoting peace; African-American studies explore the historical and cultural contributions of African-Americans and their impact on society; and cartographic information systems focus on the social implications of geography and spatial data, involving aspects of social science, especially in urban planning and demographics.

Thus, molecular biophysics stands apart as it does not engage with social structures or human behavior, making it the correct choice for this question.