Final answer:
The thyroid cartilage is attached to the cricoid cartilage by the cricothyroid ligament, an extrinsic ligament of the larynx. The option (E) is correct.
Step-by-step explanation:
The thyroid cartilage is attached to the cricoid cartilage by the cricothyroid ligament. The cricothyroid ligament is a part of the extrinsic ligaments that connect the larynx to surrounding structures. The thyroid cartilage is the largest piece and forms the anterior wall of the larynx, and is often referred to as the "Adam's apple."
The cricoid cartilage, which forms a complete ring around the airway, is located below the thyroid cartilage and together these structures are connected via the cricothyroid ligament. Therefore, option (E) is correct.