The correct answer is: a) Dolmens and stone circles.
Megalithic burial sites in Andhra Pradesh are characterized by dolmens and stone circles. Dolmens are large, flat stones supported by smaller stones, while stone circles are groups of standing stones. These structures were used as burial sites for important people, and they often contain grave goods such as pottery, jewelry, and weapons.
Option b) is incorrect because large underground chambers are not a common feature of megalithic burial sites in Andhra Pradesh. Option c) is incorrect because pyramid-like structures are not found in Andhra Pradesh. Option d) is incorrect because rock-cut temples are not a type of megalithic burial site.
Megalithic burial sites are found all over the world, and they date back to the Neolithic period. They are often associated with cultures that practiced ancestor worship. The construction of megalithic burial sites required a great deal of labor, and they are a testament to the ingenuity and skill of the people who built them.