In a cross-section of the calf, which letter represents the Fibula?

The choice indicating the Fibula is accurate because the Fibula is one of the two long bones in the lower leg, the other being the Tibia. In a typical anatomical cross-section of the calf, the Fibula is located on the lateral aspect of the leg, parallel to the Tibia. It is important to identify the Fibula correctly, as it plays a crucial role in providing stability to the ankle and serving as a site for muscle attachment.

In the context of the other options, the Tibia is the larger bone situated medially and functions primarily to bear weight. The Peroneal refers to structures related to the fibula, such as peroneal arteries or muscles but does not directly refer to the bone itself. The Lesser Saphenous Vein is a superficial vein that runs along the back of the calf, unrelated to the underlying bone structures. Thus, identifying the Fibula as represented by the indicated choice is fundamental for understanding the anatomical layout of the lower leg.