Not sure about the 3 main organs but the group that protects them are the skeletal system
Answer:
it is used as a reminder for people to remember that they are a part of an evolving society. meaning they have a freedom of choice, are equal eyes of the law and a part of the community
I think it is: The factory in which the grinding takes place.
C, encoding difficulties as he struggles to store the information within the brain and recall for the short or long term