The correct answer is: A. Singhbhum.
Ganga Narain Singh was a zamindar of Singhbhum. He was born in 1845 and died in 1920. He was the son of Raja Raghunath Singh and the grandson of Raja Balabhadra Singh. Ganga Narain Singh was the last zamindar of Singhbhum. He was a powerful and influential figure in the region. He was also a patron of the arts and literature.
The other options are incorrect.
Option B: Ranchi is a city in Jharkhand, India. It is the capital of Jharkhand. Ranchi is not a zamindar family.
Option C: Barabhum is a district in Jharkhand, India. It is located in the south-west of the state. Barabhum is not a zamindar family.
Option D: Palamu is a district in Jharkhand, India. It is located in the north-west of the state. Palamu is not a zamindar family.