To shortly answer your question, an ethic community is a community of people who relate to each other in terms of culture, traditions, and overall ethnicities. An example of an ethnic community (I am speaking on myself) would be Juneteenth. In no way do I mean offense, it is just a mere example. If you need better understanding, let me know and I will gladly assist you.
The answer is A(Support for Israel feel in the United States.)
Answer should be D. National Security. because National Security is a concept <span> that the government should protect its citizens</span>