It would be parliamentary democracy
I am sorry if I am wrong but i think it my be A.
The best and most correct answer among the choices provided by the question is the third choice "natural monopolies"
Natural monopolies<span> arise where the largest supplier in an industry, often the first supplier in a market, has an overwhelming cost advantage over other actual or potential competitors; this tends to be the case in industries where fixed costs predominate.</span>
I hope my answer has come to your help. God bless and have a nice day ahead!
Answer:
Have you ever eaten a pubepie? that's why
Answer:
The Ming practiced isolationism to prevent foreign influences from undermining their values and society.