Biomechanics is the study of which of the following?

Biomechanics is fundamentally focused on analyzing the forces that interact within living organisms, particularly how these forces affect movement and structure. By understanding biomechanics, one can assess how muscles, bones, tendons, and ligaments work together to create efficient movement patterns. This study helps in various fields, including sports science, rehabilitation, and ergonomic design, allowing professionals to improve performance or reduce injuries related to movement.

While human movement is indeed a significant aspect of biomechanics, it is not the only element; instead, it is the forces and their interactions that are central to the discipline. This approach enables a deeper understanding of the mechanics of not just movement, but how physical laws influence bodily functions, which is why this answer is the most accurate. The other options, such as social behavior and mental health, pertain to entirely different fields of study that do not involve the physical interactions of forces within a living body.