A major new invention can lead to an expansion if there

A. are increases in saving, the money supply, and employment.
B. decreases in wealth and increases in consumption and unemployment.
C. increases in investment, consumption, output, and employment.
D. decreases in saving and increases in consumption and unemployment.

C, increases in investment, consumption, output and employment.

Explanation:

A new invention can lead to an increase in investments as individuals are ready to buy shares and stock of the company that has made the invention. A new invention can also cause an expansion in employment as it creates job opportunities for the populace. it also expands output of production of other goods and services.

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i believe the answer is: streets and roads

public property refers to the property that can be used by all legal citizens in a certain country. the public property was created and maintain using the government budget that allocated specifically for it. the budget itself come from the citizen's income tax payment.