The correct answer is: D. Pakur
New alluvial soil is found in the district of Pakur. This type of soil is formed by the deposition of silt and clay carried by rivers. It is a fertile soil that is suitable for agriculture.
The other options are incorrect because they are not districts where new alluvial soil is found.
A. Dhanbad is a district in the state of Jharkhand, India. It is located in the Chota Nagpur Plateau and is known for its coal mines. The soil in Dhanbad is mostly red laterite soil, which is not suitable for agriculture.
B. Deoghar is a district in the state of Jharkhand, India. It is located in the Santhal Parganas region and is known for its temples and pilgrimage sites. The soil in Deoghar is mostly black cotton soil, which is not suitable for agriculture.
C. Dumka is a district in the state of Jharkhand, India. It is located in the Santhal Parganas region and is known for its tribal culture. The soil in Dumka is mostly red laterite soil, which is not suitable for agriculture.
D. Pakur is a district in the state of Jharkhand, India. It is located in the Santhal Parganas region and is known for its agricultural produce. The soil in Pakur is mostly new alluvial soil, which is a fertile soil that is suitable for agriculture.