The Great Bath of the Indus Valley Civilization is found at option 2, Mohenjodaro. Mohenjodaro is one of the most well-known cities of the ancient Indus Valley Civilization, which thrived around 2600 to 1900 BCE. The Great Bath is a large, well-built structure that was likely used for ritual bathing and religious ceremonies. It is believed to have been filled with water using a sophisticated drainage system. The presence of the Great Bath suggests the importance of water and ritual purification in the Indus Valley Civilization. Other options such as Harappa, Ropar, and Kalibangan were also important cities of the civilization, but the Great Bath is specifically located at Mohenjodaro.