The correct option is A) Hyderabad. The National Industrial Security Academy (NISA) is the premier training institution for the Central Industrial Security Force (CISF). It is located in Hakimpet, Hyderabad, Telangana. CISF has several training centres across India for basic and in-service training, but NISA in Hyderabad is designated as the apex training institute responsible for training officers and specialized personnel, as well as developing training modules.