The correct option is D 1, 2 and 3
A large number of people are dependent on fish and fish products for food. Catla, rohu and common carp are the common freshwater fishes which are usually reared. Hilsa, Sardines, Mackerel and Pomfrets are marine fishes which are considered very delicious.
Fisheries provides income and employment to millions of fishermen and farmers, especially in the coastal states. A large number of fishes are captured from various water bodies. Fish farming is also done on a large scale (pisciculture). A lot of varied techniques have been employed to increase fish production. Hence, fishes are easily available.
Fishes are an excellent source of food for various reasons. They are easily digestible and have a low-fat source of protein. The omega-3 fatty acids found abundantly in marine fishes (polyunsaturated fatty acids) reduces cholesterol levels and the incidence of stroke and heart diseases. The omega-3 fatty acids also enhance cognitive development.