The correct option is D Assisting the inventions in small industries and technology
The Small Inventions Development Board's principal objective is to promote and develop small industries. It renders valuable assistance to small scale units in India, including consultancy at the beginning of the project to the identification of industrial site, commissioning of projects, providing infrastructure facilities, distribution of essential raw materials marketing of the small scale industrial products, undertaking civil and electrical works, and setting up of small-scale units. Thus, due to the assistance provided by the board, many backward areas in most of the states have been developed.