Final answer:
A detailed wrist cross-section diagram would include the bones, tendons, muscles, and ligaments, such as the wrist flexors originating at the medial epicondyle of the humerus, and might be depicted as a coronal section for frontal view or a sagittal section for side view.
Step-by-step explanation:
The diagram that depicts a detailed wrist cross-section would be one that shows the bones in the wrist, such as the carpals, and how they articulate with one another and with the bones of the forearm and hand. It would also show the origins and attachments of the tendons, muscles, and ligaments in the wrist, such as the wrist flexors, which originate at the medial epicondyle of the humerus. The correct label of the wrist cross-section diagram cannot be determined without visual options (Diagram A, B, C, D), but typically, a coronal section would provide a detailed frontal view, whereas a sagittal section would provide a detailed side view.