Answer:
The correct answer is b) reduce real GDP per person and productivity
Explanation:
Real GDP would fall first of all because GDP is measured annually, and under such measures, firms would have to delay production for a whole year, and all that opportunity cost would result in lower GDP.
Productivity would fall because firms are not being allowed to invest immediately on more capital (the new factories and expansion of existing ones). Factories are a type of capital, and capital is one of the factors of production (the other being labor). Productivity is defined as the ratio between output and inputs, and inputs are the factors of production:
Productivity = Output / capital + labor
In other words, if capital does not grow, productivity will not grow.