<prompt> If a drug is active against pre erythrocytic stage of the malaria parasite it will be useful asSuppressive prophylacticCausal prophylacticClinical curativeRadical curative  <response>: Ref KDT 6e p782 Stage ---clinical use Preerythrocytic- Causal prophylaxis Erythrocytic-Clinical cure -Suppressive prophylaxis Exo-Erythrocytic: Radical cure Gametocytic Pevention of transmission 