Answer:One theory was that personality develops through a series of stages, each characterized by a certain internal psychological conflict.
Explanation: This was prtty hard but i think that i got it right
Martin Luther main religious teachings was christainity.
Answer: a person who studies human history and prehistory through the excavation of sites and the analysis of artifacts and other physical remains.
It should be D, because only it fits the criteria of being a "necessary labor resource"
