<prompt> All of the following are example of definite airways,exceptNasotracheal tubeOrotracheal tubeLaryngeal Mask airwayCricothyroidotomy  <response>: Definite airways that protect from aspiration are :- Endotracheal intubation oro-tracheal or naso-tracheal and Surgical airways tracheostomy, cricothyroidotomy.Airways that are not definite do not adequately protect from aspiration are :- Nasopharyngeal airway, oropharyngeal airway, LMA. 