Which of the following was NOT a lesson learned from the Great Depression? a. Exchange rate instability and competitive devaluations had a negative impact on economic activity.
b. Fixed exchange rate systems may not provide stability if credibility and cooperation are missing.
c. A failed banking system can lead to a large economic depression.
d. Hyperinflation can help a country get out of a deep depression.
e. Uncertainty about the future can lead to a large fall in output

d. Hyperinflation can help a country get out of a deep depression.

Explanation:

Out of all the other options, the lesson that was not learned from the Great depression was that hyperinflation can help a country get out of deep depression. Hyperinflation cannot take economies out of depression, Instead, it quickly depreciates in value. A larger sum of money is required to purchase its limited number of products. All the other options can be termed as lessons that were learned as the result of Great depression.

definitely a

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