Industries in Mizoram are primarily:

Large-scale and heavy industries
Small and medium-scale enterprises
Focused on knowledge-based sectors
Non-existent due to limited resources

The correct answer is: b) Small and medium-scale enterprises.

Mizoram is a state in northeastern India with a population of over 1.1 million people. The state is known for its natural beauty and its unique culture. The economy of Mizoram is based on agriculture, forestry, and tourism. There are a few small and medium-scale industries in Mizoram, but the state does not have any large-scale industries.

Option a) is incorrect because there are no large-scale industries in Mizoram.

Option c) is incorrect because Mizoram does not have a focus on knowledge-based sectors.

Option d) is incorrect because there are some small and medium-scale enterprises in Mizoram.