Which theory suggests that the only requirement for Less Developed Countries (LDCs) to achieve sustained economic growth is a large-scale investment initiative aimed at rapid industrialization and the development of economic infrastructure?

Explanation

The Big Push theory of development argues that LDCs need a substantial investment surge to overcome obstacles to industrialization and infrastructure, thereby initiating a self-sustaining growth process. This distinguishes it from other economic growth theories such as Rostow's model or the Harrod-Domar framework.