Please examine how the three branches have evolved in terms of power, for each one of the three branches address the following aspects: have they gained in power and what evidence do we have in that regard?

i would say b. research typically uses a variety of sources

you should think about the answers you give and expect the same form your questions.

the branch of biology that deals with the normal functions of living organisms and their parts.

the way in which a living organism or bodily part functions.

answer; people have no objective standard by which to judge themselves;