The correct answer is Mahanadi.
The Mahanadi is the largest river system in Chhattisgarh. It originates in the Sihawa hills of the Dhamtari district and flows through the state for a distance of about 850 kilometers. The river then enters Odisha and joins the Bay of Bengal.
The Mahanadi is a perennial river and is an important source of water for irrigation, drinking, and hydroelectric power. The river is also home to a variety of fish and other aquatic life.
The other options are incorrect. The Ganga is a river that flows through the northern states of India. The Godavari is a river that flows through the central and southern states of India. The Narmada is a river that flows through the central states of India.
The Mahanadi is the largest river system in Chhattisgarh. It is a perennial river and is an important source of water for irrigation, drinking, and hydroelectric power. The river is also home to a variety of fish and other aquatic life.