In the 1920s, what did businesses and industries do that caused the economy to slow down? they hired more workers. they stopped buying stocks. they bought stocks on margin. they overproduced goods.

They stopped buying stock

Explanation:

I think

D). They overproduced goods.

Explanation:

The shakeout or recession of 1920s that shook the economy of entire United States severely and which had an impact on almost every dimension of the globe.

As per the question, the major reason/cause for such a severe depression was 'overproduction of goods'(along with other causes like contraction of money, stock market crash, etc.) that lead to 'excessive supply of goods in the market' which eventually rendered the masses unemployed as the existing supplies were already in surplus. This unemployment left people with little or no money to spend that gradually led a huge downfall in prices and drove the economy towards recession. Thus, option D is the correct answer.

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