Final answer:
The extended evolutionary synthesis applied to the evolution of hominins focuses on evidence for bipedalism and anatomical reorganization. Fossil evidence is crucial in understanding this evolution.
Step-by-step explanation:
When applying the extended evolutionary synthesis to study the evolution of hominins, you would be most interested in evidence that shows the complex anatomical reorganization required for bipedalism. This includes evidence of changes that provided benefits such as freeing hands to carry tools, food, or offspring, increasing energy efficiency, or enhancing thermoregulation. Fossil evidence, such as early hominin fossils showing bipedal adaptations and the diversification of hominid species, can provide valuable information in understanding the evolution of hominins.