Final answer:
The Laryngeal mask airway (D) is known as the dual-lumen airway device.
Step-by-step explanation:
A dual-lumen airway device is known as the Laryngeal mask airway (D). It consists of a tube with two passages, one for ventilation and the other for gastric decompression. The device is commonly used when maintaining an airway during general anesthesia or in emergency situations where intubation may be difficult.