During a certain 11-year period, the Consumer Price Index (CPI) increased by

55%, but during the next 11-year period, it increased by only 15%. Which of

these conditions must have existed during the second 11-year period?

A. Stagnation

B. Inflation

C. Deflation

D. Conflation

B. Inflation

Step-by-step explanation:

Inflation refers to the increase in the price level or we can say in the other words that the prices are increased or rise in the goods and services of the particular economy

Moreover, if the inflation increased the buying power of the consumers goes decline

As in the given situation, the Consumer price index is increased by 55% but it is only increased by 15% for the next 15 year period

So this scenario shows the inflation situation

hence, the correct option is B. inflation