Linkage institutions
a. link the three branches of government together to achieve coherent policies.
b. are used to implement public policies.
c. link political parties to the government.
d. translate inputs from the public into outputs from the policymakers.

Linkage institutions translate inputs from the public into outputs from the policymakers.

Option D

Explanation:

The formation among public which connect them to the government or pivotal authority is termed as linkage institution. The organizations involved are media, political parties, elections and interest groups for an instance like NAACP, NRA, etc.

Government generates policy constructing organizations in order to frame rules and regulations which can prevent dispute among society. The Congress, the presidency and the courts are three policy making institutions of the United States Government. Linkage institutions are immensely important for linking citizens to all level government and its presence make political system work.