The correct answer is: a) Podzol soil.
Podzol soil is a type of soil that is found in cool, wet climates. It is characterized by a thin, light-colored A horizon, a thick, dark-colored B horizon, and a C horizon that is made up of weathered rock. Podzol soil is poor in nutrients and is not very good for agriculture.
Laterite soil is a type of soil that is found in tropical and subtropical climates. It is characterized by a high content of iron and aluminum oxides, which give it a reddish color. Laterite soil is often infertile and is not very good for agriculture.
Black soil is a type of soil that is found in semi-arid and sub-humid climates. It is characterized by a high content of organic matter, which gives it a dark color. Black soil is very fertile and is good for agriculture.
Alluvial soil is a type of soil that is found in floodplains and deltas. It is characterized by a high content of silt and clay, which gives it a loamy texture. Alluvial soil is very fertile and is good for agriculture.
In the high-altitude regions of Arunachal Pradesh, the climate is cool and wet. This type of climate is ideal for the formation of podzol soil. Podzol soil is a type of soil that is characterized by a thin, light-colored A horizon, a thick, dark-colored B horizon, and a C horizon that is made up of weathered rock. Podzol soil is poor in nutrients and is not very good for agriculture.