The correct answer is: a) Megalithic sites.
Megalithic sites are prehistoric monuments constructed of large stones. They are found in many parts of the world, but are particularly common in Europe, Asia, and Africa. Megalithic sites can be classified into several types, including burial chambers, standing stones, and stone circles.
Meghalaya is a state in northeastern India that is known for its numerous megalithic sites. These sites date back to the Neolithic period and are some of the oldest in the world. The most famous megalithic site in Meghalaya is the Mawphlang Megalithic Complex, which is a group of over 100 stone monoliths.
Paleolithic cave paintings are paintings that were created by early humans during the Paleolithic period. These paintings are found in caves and rock shelters all over the world. Paleolithic cave paintings depict a variety of subjects, including animals, humans, and abstract symbols.
Bronze Age settlements are archaeological sites that date back to the Bronze Age. The Bronze Age was a period of time in human history when people began to use bronze tools and weapons. Bronze Age settlements are found all over the world, but are particularly common in Europe, Asia, and Africa.
Buddhist stupas are Buddhist monuments that are typically dome-shaped. Stupas are found in many parts of the world, but are particularly common in Asia. Stupas are used to house Buddhist relics, such as the bones of the Buddha or other Buddhist saints.