The correct answer is C) Prices fell as consumer demand decreased, in the economy slow down.
The statement that best explains how the overproduction of goods in the 1920s affected consumer prices and the economy is "Prices fell as consumer demand decreased, in the economy slow down."
The United States lived a prosperous time during the so-called "Roaring 1920s." People had money or credit to buy many things; needed or not. This made companies produce big amounts of goods. Indeed, there was an overproduction, and excess of products in the market that affected consumer prices and the economy. A lot of products could not be sold and this represented a big problem for companies.