The correct answer is option 3, Elephanta caves. The Elephanta caves are a network of sculpted caves located in Mumbai Harbour. These caves are known for their rock-cut architecture and are dedicated to the Hindu god Shiva. They were created during the 5th and 6th centuries and are considered to be an important cultural and historical site in India. The caves consist of various sculptures and relief panels depicting mythological stories and events from Hindu scriptures. The most prominent and famous sculpture in the Elephanta caves is the Trimurti, which represents the three forms of Lord Shiva - the creator, preserver, and destroyer. It is important to note that options 1 (Ajanta), 2 (Ellora), and 4 (Badami) are also famous cave sites in India, but they are not located in Mumbai Harbour.