The answer to this is C. Emissions
D. The monster is invented to correct societal problems.
As the monster isn´t acutally powered by electricity, and it´s not created by a team nor paid for by the government, you can read that the monster is created to correct societal problems, such as the fear of dead and the creation of life that we couldn´t quite solve, not untill this day.
B. both reproduce
c. both employ some kind of metabolism
Answer:
A. He was not yet skilled in creating people.