Economic growth promotes a higher
A rate of production
B cost of living
C. rate of consumption
D. standard of living

I believe it's D: Standar of living.

Explanation:

Economic growth is the increase in the income or value of final goods and services produced by an economy in a given period.Broadly speaking, economic growth refers to the increase of certain indicators, such as the production of goods and services, the highest consumption of energy, savings, investment, a favorable trade balance, the increase in calorie consumption per capita, etc.  The improvement of these indicators should theoretically lead to an increase in the standards of life of the population.