To indicate that they are nouns
B. The observers up front were asked to sit down so that the ones in the back could see. When you are talking about people, you use sit, not set.
A figure of speech in which something is concrete is called a symbol
The correct answer is the first new nation based on the values of equality, individualism, and personal freedom
It was the first democratic country that was not ruled by a king and it valued democracy, not hereditary aristocracy or anything of the sort.