Supreme LMA characteristic is -

Ans. is 'd' i.e., Has built in drain tubeo LMA supreme is one of the most advanced laryngeal mask airway (LMA).o It has features of usual LMA with additional Built-in drain tube and a bite block.o It has high volume / low pressure cuff which generates higher seal pressure,o It also provides a conduit for active suctioning of stomach,o It can be used in infants as well as in adults.