The mighty Brahmaputra River is a major lifeline for Assam and is important for:

The correct answer is: d) All of the above

The Brahmaputra River is a major lifeline for Assam and is important for irrigation, transportation, and hydropower potential.

• Irrigation: The Brahmaputra River is used to irrigate crops in Assam. The river provides water for both dryland and wetland agriculture.
• Transportation: The Brahmaputra River is a major transportation route in Assam. The river is used to transport goods and people.
• Hydropower potential: The Brahmaputra River has a large hydropower potential. The river could be used to generate electricity.

The Brahmaputra River is a vital resource for Assam. The river provides water for irrigation, transportation, and hydropower. The river is also a source of food and livelihood for many people in Assam.