inflation can be measured by the\nchange in the consumer price index.\npercentage change in the consumer…

Brief Explanations:

Inflation is the general increase in the price - level of an economy over a period of time. The consumer price index (CPI) measures the average change over time in the prices paid by urban consumers for a market basket of consumer goods and services. Inflation is measured by the percentage change in the CPI, which gives an indication of the overall price - level movement in the economy. A change in the price of a specific commodity only reflects the price change of that single item and not the overall inflation.

Answer:

B. percentage change in the consumer price index.