The art of bronze-casting was practised on a wide scale by the Harappans. Hence, statement 1 is correct . Their bronze statues were made using the ‘lost wax’ technique in which the wax figures were first covered with a coating of clay and allowed to dry. In bronze, we find human as well as animal figures , the best example of the former being the statue of a girl popularly titled ‘Dancing Girl’ . The copper dog and bird of Lothal and the bronze figure of a bull from Kalibangan are in no way inferior to the human figures of copper and bronze from Harappa and Mohenjodaro. One of the best-known artefacts from the Indus Valley is an approximately four-inch high copper figure of a dancing girl . Found in Mohenjodaro , this exquisite casting depicts a girl whose long hair is tied in a bun. Hence, statement 3 is correct. The Indus Valley people made terracotta images also but compared to the stone and bronze statues the terracotta representations of the human form are crude in the Indus Valley . Hence, statement 4 is correct. They are more realistic in Gujarat sites and Kalibangan . The most important among the Indus figures are those representing the mother goddess .