Answer:
the Greeks' emphasis on the individuals is one major cornerstone of western civilization." A social theory favoring freedom of action for individuals over collective or state control. "Indeed, the spirit of individualism as defined by the Greeks is still alive and well in modern American culture and society."
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"Today nobody brought his or her instrument" is correct. It is common for people to use "their" in a sentence like this, but "his or her" is the more proper term.
The answers are b, d, and e