The answer would be C. self-discipline
Answer is A. few survived the horrific train ride.
In Ancient times, sickness was thought to be caused by an excess of blood. Therefore, doctors would cut into their patients and let some of the blood out to help cure them. This theory advanced into thinking that the human body needed all of its "humors" to be balanced: blood was one of the humors so if the doctor thought you had an imbalance, they would 'let' some of the blood out.
Answer:
It is important to have borders between people to ensure that people get along.
Explanation:
In the poem "Mending Wall", Robert Frost presents the picture of the wall and the neighbors. The word 'wall' has been metaphorically used to highlight the division that humans have built around their spaces. The poet does not support building any sort of wall between his and his neighbor's land. He wants to demolish the division. It is the neighbor who says the line "Good fences make good neighbors." Through this line, the neighbor had highlighted the importance of having a division on good terms. The healthy relationship between the two neighbors helps to keep the environment and the relations in positive terms.