The government is involved in the u. s. economy for all of the following reasons except to
a. promote and encourage competition.
b. prevent monopolies that deny the public the benefits of competition.
c. regulate industries in which a monopoly is in the public interest.
d. promote the development of market externalities.

The Correct Answer is D.

The government in the U.S. economy does not "promote the development of market externalities.

Explanation:

The government's role in the economy is inevitable because certain roles and responsibilities cannot be assumed by the private sector.

A government is supposed to guide and control the activity of the economy and work for the welfare of the weaker section of the society and make sure that any Individual is not get exploited by the hands of another individual or any firm. for this reason, government regulation and intervention is much needed in the Economy.  

the outcome of 1970 oil crisis in united states was that, they began to search ways on how to reduce oil.

in 1970 was a period when there were energy and oil crisis. those who were major centers for industrialization were forced to keep way from supplying of petroleum.

some of the result of this crisis was economic growth became stagnant because prices of oil surged.

due to the increased prices some countries like mexico and norway benefited.