**Core Concept**
Sistrunk's operation is a surgical procedure used to treat a specific congenital anomaly of the thyroid gland, known as a thyroglossal duct cyst (TGDC). This condition occurs when the thyroglossal duct, which is a structure that forms during embryonic development and normally regresses, fails to close completely. As a result, a cyst forms along the path of the duct, typically in the midline of the neck.

**Why the Correct Answer is Right**
The procedure involves the removal of the cyst, the central portion of the hyoid bone, and a tract of tissue that connects the cyst to the foramen cecum of the tongue. This is done to prevent recurrence of the cyst. The tract is excised because it contains a duct that can lead to the formation of a new cyst if left intact. The central portion of the hyoid bone is removed because it often contains a portion of the thyroglossal duct. The foramen cecum, a small opening in the tongue, is also relevant because it is the site where the thyroglossal duct originates during embryonic development.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incomplete and does not accurately describe Sistrunk's operation.
**Option B:** This option is also incomplete and does not mention the central portion of the hyoid bone, which is an essential part of the procedure.
**Option C:** This option is incorrect because it does not include the removal of the tract of tissue that connects the cyst to the foramen cecum.

**Clinical Pearl / High-Yield Fact**
Sistrunk's operation is a classic example of a procedure that requires a thorough understanding of embryonic development and the anatomy of the thyroid gland. It is essential for surgeons to know the embryological origin of the thyroglossal duct cyst to plan the operation effectively.

**Correct Answer: D. Removal of the cyst, the central portion of the hyoid bone, and the tract of tissue connecting the cyst to the foramen cecum.**