To help other people realize something that might not be common sense to them.
The correct answer is - d. Each answer shown is correct.
The formation of a civilization is a process in which multiple things are included. The basis for it is the agriculture, as it enabled the people to start settling in one place. But in order for it to be classified as a civilization, certain other things have to appear, things that would enable progress, development, higher level of thinking, architecture. The basis for these things to occur are the building of the planned cities, that already showed a level of advancement, as well as the written language, which is the trait that contributed the most to the development of the people, thus becoming a civilization.
The idea of "Camelot" called to mind an ideal sort of place, almost like a fairy tale existence. The original "Camelot," of course, was the court of the fabled King Arthur of England and his Knights of the Round Table.
Jackie Kennedy, the wife and then widow of President John F. Kennedy, is the one who originated the reference to the Kennedy time in the White House as "Camelot." She made that reference in an interview for LIFE magazine after her husband's assassination. She was trying to call to mind the high, idealistic principles of King Arthur of Camelot, comparing that to what her husband JFK had wanted to accomplish as president.
Answer:
a line of rulers tahts passed down through the generations of a family
