The organization responsible for the management of railway networks in Karnataka:

The correct answer is A) SWR.

The South Western Railway (SWR) is one of the 17 railway zones of Indian Railways. It is headquartered in Hubli, Karnataka. The SWR is responsible for the management of railway networks in the states of Karnataka, Kerala, Tamil Nadu, Andhra Pradesh, Puducherry, and Lakshadweep.

The KRCL is a state-owned enterprise that is responsible for the construction and maintenance of roads in Karnataka. The BMTC is a state-owned enterprise that is responsible for the operation of public buses in Bangalore. The KSRTC is a state-owned enterprise that is responsible for the operation of public buses in Karnataka.