The question is asking about the raw materials that can be used for the production of biofuels according to India's National Policy on Biofuels. Cassava is a starch-rich root vegetable that can be used to produce biofuel. Damaged wheat grains, which are unfit for human consumption, can also be used to produce biofuel. Groundnut seeds are not mentioned in the National Policy on Biofuels as a raw material for biofuel production. Horse gram is also not mentioned in the National Policy on Biofuels as a raw material for biofuel production. Rotten potatoes, which are unfit for human consumption, can be used to produce biofuel. Sugar beet is a plant whose root contains a high concentration of sucrose and it is grown commercially for sugar production. It can also be used to produce biofuel. Therefore, according to India's National Policy on Biofuels, Cassava, Damaged wheat grains, Rotten potatoes, and Sugar beet can be used as raw materials for the production of biofuels.