Antagonist of Benzodiazepine is
Nalorphine
Carbamazepine
Naloxone
Flumazenil
Ans. is 'd' i.e., Flumazenil Flumazenil is a benzodiazepine analogue which competes with BZD agonists as well as acts as inverse agonists for the BZD receptor and reverses their depressant or stimulant effects respectively.
C.N.S