The correct answer is: d) All of the above.
Prehistoric burial sites in Gujarat sometimes contain megalithic structures, pottery offerings, and copper artifacts.
Megalithic structures are large stone monuments that were built by prehistoric peoples. They can be found in many parts of the world, including Gujarat. Megalithic structures are often used as burial sites, but they can also be used for other purposes, such as religious ceremonies or astronomical observations.
Pottery offerings are objects that were placed in the graves of the deceased. These objects can be made of a variety of materials, including clay, stone, and metal. Pottery offerings often have religious or symbolic significance.
Copper artifacts are objects that were made of copper. Copper is a soft metal that was easily worked by prehistoric peoples. Copper artifacts can be found in many different forms, including tools, weapons, and jewelry.
Prehistoric burial sites in Gujarat are a valuable source of information about the cultures of the people who lived in this region in the past. These sites can provide us with insights into their beliefs, customs, and technologies.