The lungs have the largest surface-area-to-volume ratio among the options provided. This is crucial for effective gas exchange of oxygen and carbon dioxide. Other options, like jaw bones, hair follicles, and shoulder muscles, do not prioritize surface area in the same way. ;
The lungs (option C) contain cells with the largest surface-area-to-volume ratio, which is crucial for efficient gas exchange. In contrast, jaw bones, hair follicles, and shoulder muscles focus on structural support rather than maximizing surface area. The presence of alveoli in the lungs greatly increases their effective surface area for this purpose.
;