What economic stage is characterized by rapid industrial growth and investment in infrastructure?

The economic stage characterized by rapid industrial growth and significant investment in infrastructure is known as the "Take off" stage. This phase marks a pivotal moment in a country's economic development where there is a sharp increase in industrialization and productivity. During the Take off stage, investments are made into infrastructure such as transportation systems, communication networks, and utilities, which facilitate further economic activities and attract even more investment.

The Take off stage is essential as it lays the groundwork for sustained economic growth. At this point, the economy shifts from reliance on primary sectors (like agriculture) to more secondary sectors (such as manufacturing) and begins to diversify its economic base. This transformation is crucial for enabling further stages of economic development, where the economy can sustain growth and improve living standards.

In this context, it becomes clear why this option encapsulates a critical phase of economic progression, defined by its haste in industrial growth and the efforts made to improve infrastructure, which are necessary for the subsequent stages of development.