The correct answer is: b) Khasi Hills
The Khasi Hills are a mountain range in the northeastern Indian state of Meghalaya. They are the largest and most populous of the three main mountain ranges in Meghalaya, the others being the Garo Hills and the Jaintia Hills. The Khasi Hills are home to a number of important coal deposits, which are a major source of revenue for the state.
The Garo Hills are a mountain range in the northeastern Indian state of Meghalaya. They are the second largest and most populous of the three main mountain ranges in Meghalaya, the others being the Khasi Hills and the Jaintia Hills. The Garo Hills are home to a number of important coal deposits, but they are not as significant as those in the Khasi Hills.
The Jaintia Hills are a mountain range in the northeastern Indian state of Meghalaya. They are the third largest and most populous of the three main mountain ranges in Meghalaya, the others being the Khasi Hills and the Garo Hills. The Jaintia Hills are home to a number of important coal deposits, but they are not as significant as those in the Khasi Hills.
The Brahmaputra Valley is a large river valley in the northeastern Indian state of Assam. It is the largest river valley in India and is home to a number of important coal deposits. However, the coal deposits in the Brahmaputra Valley are not as significant as those in the Khasi Hills.