The correct answer is D. Groundnut.
Groundnut is the major oilseed grown in Jharkhand. It is a legume crop that is native to South America. Groundnuts are a good source of protein, fiber, and vitamins. They are also a good source of oil, which is used in cooking and in the production of biodiesel.
Soybean is a legume crop that is native to East Asia. Soybeans are a good source of protein, fiber, and vitamins. They are also a good source of oil, which is used in cooking and in the production of biodiesel.
Sunflower is a flowering plant that is native to North America. Sunflowers are a good source of oil, which is used in cooking and in the production of biodiesel.
Mustard is a flowering plant that is native to Europe and Asia. Mustard is a good source of vitamins and minerals. It is also used as a spice.
Groundnut is the major oilseed grown in Jharkhand because it is a good source of protein, fiber, and vitamins. It is also a good source of oil, which is used in cooking and in the production of biodiesel.