The correct answer is D. Subarnarekha.
The Subarnarekha is a river in eastern India. It originates in the Chhotanagpur Plateau in Jharkhand and flows through Odisha before emptying into the Bay of Bengal. It is the longest river in Jharkhand and the third longest river in Odisha.
The Damodar is a river in eastern India. It originates in the Chhotanagpur Plateau in Jharkhand and flows through West Bengal before emptying into the Bay of Bengal. It is the second longest river in Jharkhand and the fifth longest river in West Bengal.
The Brahmani is a river in eastern India. It originates in the Chhotanagpur Plateau in Jharkhand and flows through Odisha before emptying into the Bay of Bengal. It is the third longest river in Odisha.
The Kharkai is a river in eastern India. It originates in the Chhotanagpur Plateau in Jharkhand and flows through Odisha before emptying into the Bay of Bengal. It is the fourth longest river in Odisha.
The Subarnarekha is the only river of Jharkhand which falls in Bay of Bengal. The other three rivers, Damodar, Brahmani, and Kharkai, all fall in the Ganges River system.