The scale of mining operations in Mizoram is generally:

Large-scale industrial mining
Small-scale and artisanal mining
Primarily focused on offshore extraction
Non-existent due to environmental regulations

The correct answer is: b) Small-scale and artisanal mining.

Mizoram is a state in northeastern India. It is a mountainous state with a population of about 1.1 million people. The economy of Mizoram is based on agriculture, forestry, and tourism. There is some small-scale mining in Mizoram, but it is not a major industry.

Option a) is incorrect because there is no large-scale industrial mining in Mizoram.

Option c) is incorrect because offshore extraction is not a major industry in Mizoram.

Option d) is incorrect because there is some small-scale mining in Mizoram, but it is not a major industry.