The correct options are
B Most of the fisherman respect the fish breeding and do not go for fishing during that season.
C Government bans fishing during the breeding season.
Fishes breed during monsoon, also called as the rainy season, breeding is the process in which fish lays eggs. Fishing is banned during that time so the fishes can freely grow and lay eggs without getting trapped by fishing and eggs getting killed, that will make a massive loss of fishes. Even the fisherman respects it.