I think the best answer here would be C.
Hope i helped!
Nativism is a theory in psychology that says most of the basic skills are carved into the brain at birth. So the design skills that are accepted as such. This psychological aspect can be linked with the social and political aspect, as a favor of people who were born in a certain place above those who moved there. In that case nativism is a political ideology. The policy of promoting the interests of autochthonous groups can often engage in restrictive immigration measures, such as protection against immigration cultural influences. It is primarily meant to preserve the language, religion, customs.
The answer is cultural forces.
The purpose is expressed in the preamble to the Constitution:
‘‘We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility
provide for the common defense, promote the general Welfare, and secure
the Blessings of Liberty to ourselves and our Posterity