The consumer price index is best described as the inflation rate for a given period of time.
Option A is correct .
The consumer price index (CPI) is a measure of the average change over time in the prices paid by urban consumers for a basket of consumer goods and services. The consumer price index (CPI) is a tool used to measure inflation. It can estimate the average change between two certain periods in the prices of products consumed by households. It is a composite measure of product price evolution, with constant quality.
The consumer price index, or CPI, is a measure of inflation calculated by US government statisticians based on the price level of a fixed basket of goods and services that represent consumer purchases. medium.
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