What structural elements are part of the wings of an aircraft?

The wings of an aircraft are complex structures made up of several key components that work together to provide strength, aerodynamic efficiency, and control. The correct answer highlights wing ribs, spars, and the skin as essential structural elements.

Wing ribs are critical because they provide the shape and aerodynamic profile of the wing. They help distribute the load throughout the wing and resist bending during flight. Spars, on the other hand, are the main structural members that run along the length of the wing. They are responsible for bearing most of the aerodynamic loads and provide overall stability to the wing structure.

The skin of the wing acts as a covering that adds to the wing's structural integrity and helps streamline airflow over its surface. Together, these components create a robust structure that supports the various aerodynamic forces acting on the wings during flight.

While other options mention elements that play essential roles in the wing's functionality, they do not encompass the primary structural components as effectively as wing ribs, spars, and skin do.