Which study focuses on the structure and organization of the human body?

The study that specifically focuses on the structure and organization of the human body is anatomy. Anatomy is the branch of biology that examines the physical structure of organisms, including their systems, organs, and tissues. This field includes various specializations, such as gross anatomy, which looks at structures visible without a microscope, and microscopic anatomy (histology), which examines structures at a cellular level.

In contrast, physiology is the study of the functions and processes of various biological systems, including how anatomical structures work together. Pathology is concerned with the nature of diseases and their effects on the body rather than on the basic structure itself. The theory of evolution deals with the origins and changes in species over time, rather than the direct examination of human body structures. Therefore, anatomy is the correct field that focuses on understanding how the human body is organized.