Sporozoites are the infectious form of the malarial parasite. the parasites multiply within the mosquito's body to form sporozoites that are stored in their salivary glands When an infected female Anopheles mosquito bites a human, these sporozoites are introduced into the body A 'freshly moulted' mosquito (Option C) would not yet have taken an infected blood meal or allowed time for the parasite's cycle to complete, so it would not contain sporozoites. Therefore, the sporozoites are found in the saliva/salivary glands of an infected mosquito.