What does the "Age of mass consumption" signify?

The "Age of mass consumption" refers to a period in economic development characterized by the expansion of consumer goods and services, made accessible to a large portion of the population. This phase is marked by an increase in the demand for diverse products, leading to a shift where economies move towards predominantly service-oriented industries, often referred to as the tertiary sector.

During this era, the growth of disposable income and the rise of a consumer culture lead to a surge in industries that provide services and goods tailored to the masses, such as retail, leisure, health, and education. This significant transformation from industrial-based production to services denotes the rapid expansion of these third industries, aligning perfectly with the essence of the "Age of mass consumption." Thus, this choice correctly encapsulates the historical and economic implications of this transformative period.