The correct option is
D Both B and C
The cultivation of marine or freshwater organisms, especially food fish or shellfish, such as salmon or oysters, under controlled conditions. Also called as aquafarming.
The farming of aquatic organisms including fish, molluscs, crustaceans and aquatic plants with some sort of intervention in the rearing process to enhance production, such as regular stocking, feeding and protection from predators.
There are various stages of aquaculture operations including a hatchery operation, which produces fertilised eggs, larvae or fingerlings, a nursery operation, which nurses small larvae to fingerlings or juveniles and a grow-out operation, which farms fingerlings or juveniles to marketable sizes.