<prompt> Mechanism of action of d-tubocurarine is:-Competitive, nondepolarizing block at the Nm cholinergic receptorNon-competitive, nondepolarizing block at the Nm cholinergic receptorCompetitive, depolarizing block at the Nm cholinergic receptorNoncompetitive, depolarizing block at the Nm cholinergic receptor  <response>: Neuro Muscular blockers Depolarising or Non-competitive Non-depolarising or competitive Succinylcholine Dexamethonium Curium Curonium Atracurium Cisatracurium Mivacurium Pancuronium Pipecuronium Vecuronium Rocuronium Rapacuronium 