The correct answer is: a) Rock-cut cave temples.
The Undavalli Caves are a group of 10 Hindu and Jain rock-cut cave temples located in Undavalli, Andhra Pradesh, India. The caves are carved out of a large sandstone boulder on the banks of the Krishna River. The caves date from the 6th to the 8th centuries AD.
The caves are a popular tourist destination. They are also an important archaeological site. The caves are a fine example of early Indian rock-cut architecture.
Megalithic burial sites are large stone monuments that were used for burials. They are found in many parts of the world, including Europe, Asia, and Africa. Megalithic burial sites are typically dated to the Neolithic period (8000-2000 BC).
Buddhist monasteries are places where Buddhist monks and nuns live and practice their religion. They are found in many parts of the world, including Asia, Europe, and North America. Buddhist monasteries are typically dated to the 3rd century BC.
Fortified palaces are large buildings that were built to protect the rulers of a kingdom. They are found in many parts of the world, including Europe, Asia, and Africa. Fortified palaces are typically dated to the Middle Ages (5th-15th centuries AD).