I believe the answer is: C. diplomats and ambassadors
Diplomats and ambassadors are deployed to live in foreign country as their country's representation in that foreign land. They played a huge role in negotiating political and trading agreements with foreign countries and also had the role in protecting the rights of citizens that live in foreign countries.
<span>The method consists of variations of environment in former periods by comparative study of growth rings in trees and aged wood.</span>
<span>to escape persecution and to create a model new society</span>