The correct answer is option 3: Indonesia. Mount Merapi, a volcano, is located in Indonesia. It is one of the most active volcanoes in the country and has experienced numerous eruptions throughout history. In January 2021, Mount Merapi erupted, releasing volcanic ash and gases into the atmosphere. This eruption caused the local authorities to issue warnings and evacuation orders to nearby communities to ensure their safety. Mount Merapi is part of the Pacific Ring of Fire, which is an area known for its frequent volcanic activity and earthquakes. It is situated on the island of Java, which is the most populous island in Indonesia and is known for its diverse landscapes and rich volcanic soil.