The answer is A. delegating authority. hope it helps :)
The researchers are relying on anatomical classifications of chimpanzees and humans, as this is most appropriate when looking at adaptation and anatomy.
Because historically, many scientists have believed that we are an evolution of chimpanzees, since their anatomy resembles that of a modern person.
Philosophers are thinkers who ponder questions of life.
Montesquieu's system of "separation of powers" means that government should be divided into three branches (a). Montesquieu argued that a tripartite system was best or a system divided between the legislative, executive, and judicial branches so that no one branch would gain too much power in governance.