What is it called when previously unemployed factors are put into production, represented by a movement within a PPC?

The concept referred to in the question is actual growth. Actual growth occurs when an economy utilizes previously unemployed factors of production, leading to an increase in the quantity of goods and services produced. This is visually represented by a movement within the Production Possibility Curve (PPC), where the economy moves closer to its potential output, effectively making use of underutilized resources.

When resources that were not being employed (such as labor or capital) are now engaged in production, the economy becomes more efficient, enhancing its output without necessarily increasing the number of resources available. This scenario is essential for understanding how economies can recover from downturns or recessions by fully utilizing their resources.

The other options represent different economic concepts. Poverty reduction is focused on decreasing the number of individuals living in poverty, structural growth pertains to long-term changes in the economy that improve productivity and capacity, while inflationary growth indicates a situation where the production of goods and services is increasing alongside rising prices, often leading to potential economic imbalances.