Respuesta :
The condition that existed during the second 8-year period is inflation. This is because the CPI is increased even in these 8-years.
How inflation and CPI (consumer price index) are related?
If the CPI increases over a period of time when inflation exists during that period of time.
Inflation rate = [(current) CPI - (past) CPI]CPI(current) × 100
Which condition is true for the given CPI?
During a certain 8-year period, the consumer price index (CPI) increased by 70%.
But during the next 8-year period, it increased by only 60%.
Even though there is a change in percentage, the CPI increased during that period.
This is because inflation. So, option A is correct.
So, inflation existed during the second 8-year period.
Learn more about the inflation and the CPI here:
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