Thorstein veblen argued that elites participated in or wanting others to see what they were able to consume, especially those things that served to differentiate them from those in lower social classes.

Conspicuous consumption

Explanation:

In the twentieth century there were significant improvement in the living standards of people. One of the effects of this was the increased amount of consumption of goods by the people who had discretionary income.

Later, this consumption was done in order show one's superiority over others. This was done in order to maintain their social status to gain a higher social status. This type of consumption is called conspicuous consumption.

well, there are a lot of places we get information about earth from. like science classes, websites, books, newspapers, etc.

it would be d). more resources must be obtained to attain that combination of goods and services