The correct answer is: b) Megalithic.
Megalithic structures are large stone monuments that were built during the Neolithic period. They are found all over the world, and they are often associated with burial practices. Some of the most famous megalithic structures include Stonehenge in England, the Pyramids of Giza in Egypt, and the Moai statues on Easter Island.
The Paleolithic period is the earliest period of human history, and it lasted from about 2.5 million years ago to about 10,000 years ago. During this time, humans were hunter-gatherers, and they did not build large stone structures.
The Chalcolithic period is a transitional period between the Neolithic and Bronze Ages. It lasted from about 4,500 to about 3,300 years ago. During this time, humans began to use copper tools and weapons, but they did not build large stone structures.
The Historic Period is the period of human history that began with the invention of writing. It is divided into the Ancient, Medieval, Renaissance, Modern, and Contemporary periods. During this time, humans have built many large stone structures, but they are not characteristic of this period.
In conclusion, the correct answer is: b) Megalithic.