Which of the following describes hyaline cartilage?

Hyaline cartilage is characterized by its smooth, glassy appearance and is predominantly found at the ends of long bones, within the rib cage, in the nose, and in various structures of the respiratory tract, including the larynx. It plays a critical role in providing flexible support while allowing for the smooth movement of joints. The statement that it is present in the larynx and the articular ends of bones accurately reflects its functional and anatomical significance in the human body.

The other options do not describe hyaline cartilage accurately. For instance, the external ear is primarily composed of elastic cartilage, which offers more flexibility and shape retention. The pubic symphysis is composed of fibrocartilage, which provides tensile strength and is less flexible than hyaline cartilage. Lastly, fibrous discs in the spine are also made of fibrocartilage, which is different from the smooth nature and less fibrous structure of hyaline cartilage.