The correct option is D A process under which the set objectives of political development are to be achieved in a determined period of time.
Economic planning is a process under which the set objectives of economic development are to be achieved in a determined period of time.
In India, this was done by the Planning Commission. The Planning Commission was set up in 1950 and put forth numerous Five-Year Plans with objectives like reduction in poverty and increase in agricultural and industrial development to increase economic development.