The correct answer is internal.
Internal locus of control refers to when a person believes that he or she personally has control and responsibility for the outcomes in his or her life, and that external forces are not responsible for his or her life outcomes. For instance, a person with an internal locus of control is more likely to believe that his or her academic and job success (or lack thereof) lies in his or her control rather than in external factors such as others' intentions, unfairness, poor situations, etc.
According E2020 C) Two competitive teams were assigned a unified goal that could not be accomplished without the help of either team.
The correct answer is the plow. When the plow was invented agriculture was made much easier which enabled people to settle around and make surplus of food. This enabled them to trade with others and increase the size of the cities and the rest is history.
The answer is physical and mental work.
Human Resources means using humans as a resource. So any company that has employees that work in a physical or mental capacity are using Human Resources. This is different from using machines or computers to do the work, we are only talking about work done by the minds and/or bodies of humans.