The correct answer is: A. over all price level.
The overall price level is a measure of the average prices of goods and services in an economy. It is calculated by taking a weighted average of the prices of a basket of goods and services. The basket of goods and services is typically chosen to represent the typical consumption of a household.
The overall price level can change for a number of reasons, including changes in the supply of money, changes in the demand for goods and services, and changes in the costs of production.
When the overall price level increases, it means that the purchasing power of money decreases. This means that people can buy less with the same amount of money.
When the overall price level decreases, it means that the purchasing power of money increases. This means that people can buy more with the same amount of money.
The overall price level is an important economic indicator because it can affect a number of economic variables, including inflation, interest rates, and economic growth.
Option B, general price level, is incorrect because it is not a specific term. The overall price level is a more specific term that refers to the average prices of goods and services in an economy.
Option C, individual price level, is incorrect because it refers to the price of a single good or service. The overall price level refers to the average prices of goods and services in an economy.
Option D, discounting price level, is incorrect because it refers to the process of adjusting the prices of goods and services for inflation. The overall price level is not adjusted for inflation.