Answer:
A. Inflation
Explanation:
CPI is an abbreviation for the consumer price index. The CPI is a measure of the average changes in the prices of consumer goods and services in the economy. The CPI index measures changes in prices of products that represent the general consumption in the economy. Economists use the CPI index to ascertain the rate of inflation.
Inflation is described as the increase in prices of goods and services in the economy in a period. If prices in the economy are increasing at a high rate, the CPI index will be high. A high CPI index indicates the inflation rate is high.