The appropriate response is Iowa Caucuses. It is a discretionary occasion in which inhabitants of the U.S. territory of Iowa meet in area gatherings in the majority of Iowa's 1,681 regions and choose agents to the relating traditions in each of the state's 99 provinces. These area traditions at that point select representatives for both Iowa's Congressional District Convention and the State Convention, which in the long run pick the agents for the presidential choosing traditions.
The war pitted the Central Powers (mainly Germany, Austria-Hungary, and Turkey) against the Allies (mainly France, Great Britain, Russia, Italy, Japan, and, from 1917, the United States). Read more about the Allied powers.
Answer:D)Command-and-control policy to increase social efficiency.
Explanation: Command and control policy is the regulation that works for the environment as a policy or strategy.It helps in the improvement of environment regulation by anti pollution devices,schemes etc.It helps in the cleaning and protecting the environment from the pollution.
Emission control is for the limitation of the harmful gases from the automobiles.Other options are incorrect because it does not remove congestion,pollution through market strategy or for correcting tax.Thus,the correct option is option(D).