Arhar + Soybean intercropping popular in

Answer: Option B

Intercropping involves cultivating two or more crops in a field simultaneously. Mostly it is done as one legume crop and the other one as a non-legume crop, but in Madhya Pradesh both legumes i.e. arhar and soybean are grown as intercrops.
Intercropping of arhar with soybean is better for risk management and utilization of nutrients from different layers of soil.