A unique aspect of Jhum cultivation in Mizoram might be:

Growing a mix of crops on the same plot
Use of heavy machinery
Focus on exporting produce
Government subsidies for fertilizers

The correct answer is: a) Growing a mix of crops on the same plot.

Jhum cultivation is a traditional form of shifting cultivation practiced in the hills of northeast India, including Mizoram. It involves clearing a patch of forest, burning the vegetation, and then planting crops on the ash-enriched soil. The land is then left fallow for several years to allow the forest to regenerate.

One of the unique aspects of Jhum cultivation is that it involves growing a mix of crops on the same plot. This is done to reduce the risk of crop failure and to ensure that there is a variety of food available throughout the year. The crops that are typically grown in Jhum cultivation include rice, maize, millet, yams, and vegetables.

The other options are not unique aspects of Jhum cultivation. Option b), use of heavy machinery, is not typically used in Jhum cultivation. Option c), focus on exporting produce, is not a major focus of Jhum cultivation, as most of the produce is consumed locally. Option d), government subsidies for fertilizers, are not typically available for Jhum cultivation.

I hope this helps! Let me know if you have any other questions.