The introduction of tea cultivation in Assam transformed the region’s:

The correct answer is: d) All of the above

The introduction of tea cultivation in Assam transformed the region’s economy, landscape, and demographics.

• Economy: Tea cultivation became a major source of income for the region, and the tea industry employed a large number of people.
• Landscape: The tea plantations changed the landscape of Assam, with large areas of forest being cleared to make way for tea bushes.
• Demographics: The influx of workers from other parts of India to work in the tea plantations led to a change in the demographics of Assam.

The introduction of tea cultivation had a profound impact on the region of Assam. It transformed the economy, landscape, and demographics of the region.