Who was the first scholar to use the term 'Indus Civilization'?

The correct answer is Option (2) → John Marshall

Sir John Marshall, Director-General of the Archaeological Survey of India, announced the discovery of a new civilisation at Harappa and Mohenjo-daro in 1924 and was the first scholar to call it the ‘Indus Civilization’. The excavations themselves were led by Daya Ram Sahni at Harappa (1921) and R. D. Banerji at Mohenjo-daro (1922), working under him.