Asmall settlement formed along the indus river following the neolithic revolution. as the settlement grew, people began to specialize at certain jobs and develop advanced technology. what other development does the settlement need to be considered a civilization?

a. man-made borders
b. absolute monarchy
c. complex social institutions
d. a large territory to rule
i think it's a but im not so sure

C. Complex social institutions.
I guess, the first thing that must be done in a settlement to be considered a civilization is order in the society. A ruler or form of government is needed. After the accomplishments on the political and social aspects. It is already a civilization. It is then, when the civilization needs protection against invaders. So A is not the answer. B cannot be cuz this "early" civilization is not possible to know about monarchies when it hasn't even set a form of getting government and it has just settled and populated. If there's not ruler, there's no such thing as territory. So, it is not D but C :v