The correct option is A Harappan Civilisation
When under the guidance of Sir John Marshall, some 1,500 sites were excavated, it was discovered there was a civilisation that existed around the River Indus and its tributaries some 4,500 years ago. Therefore, that civilisation was called the Indus Valley Civilisation. Since Harappa was the first and the biggest site to be excavated, the Indus Valley Civilisation was also called the Harappan Civilisation.