Harappa and mohenjo-daro were two main cities of the civilization. chinese sumerian persian indus

I believe the correct answer from the choices listed above is the last option. Harappa and mohenjo-daro were two main cities of the indus civilization. They arose at about 2500 BCE and ended with apparent destruction about 1500 BCE. Hope this answers the question.

Answermost of the time it would be ground into fine sediment,and sometimes they are carried away from the original location;

Ones bigger then than the other