<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 4-year-old girl is brought to the physician for a painless lump on her neck. She has no history of serious illness and her vital signs are within normal limits. On examination, there is a firm, 2-cm swelling at the midline just below the level of the hyoid bone. The mass moves cranially when she is asked to protrude her tongue. Which of the following is the most likely diagnosis?? A: Thyroglossal cyst, B: Ranula, C: Laryngocele, D: Cystic hygroma, E: Dermoid cyst,  <response>: This is a clinical case of a 4-year-old girl with a painless neck mass. Based on the location below the hyoid bone and the movement with tongue protrusion, this is most likely a thyroglossal duct cyst. Thyroglossal duct cysts arise from remnants of the thyroglossal duct during embryonic development of the thyroid gland. They are typically midline cystic masses that move up with swallowing or tongue protrusion. The other options can be ruled out based on location or other clinical features.A: Thyroglossal cyst 