The "Mythical Massacre at Mohenjodaro" was questioned by which archaeologist ?

G.F. Dales

The correct answer is Option (4) → G.F. Dales

In the 1960s, the evidence of a massacre in Mohenjodaro was questioned by an archaeologist named George Dales. He demonstrated that the skeletons found at the site did not belong to the same period: Whereas a couple of them definitely seem to indicate a slaughter, … the bulk of the bones were found in contexts suggesting burials of the sloppiest and most irreverent nature. There is no destruction level covering the latest period of the city, no sign of extensive burning, no bodies of warriors clad in armour and surrounded by the weapons of war. The citadel, the only fortified part of the city, yielded no evidence of a final defence.
FROM G.F. DALES, “The Mythical Massacre at Mohenjodaro”, Expediton, 1964.