Which of the following most directly contributed to the developments described in the excerpt?

D. Improvements in production techniques

Explanation:

The 1920s saw an improvement in production techniques that led to the mass production of certain items, chief amongst them the motor vehicle.

People saw the opportunities that mass production could bring and applied it to other products such as radios and the result was a mass production that led to a mass consumption of radio because everybody wanted to own a radio and be connected to the rest of the America and the World.

answer; ///i do believe that the correct answer is (d); ///athens had a small population;

when a country suffers, for example, a drought period, the market product is affected for a low offer, in this case, potatoes; the government has to tax to the households, which have to give more money for the potatoes which they consume, that situation make them consume substitute goods even through loans, it could increase the financial market movement and the inflationary phenomena, the business has to increase salaries in order to the employees could buy a more expensive food (potatoes) and in order to inflation tha business had to buy expensive supplies in the factor market, while the rest of the world have to gain more money to consume the same amount of potatoes.