The correct answer is 3) members of the royal family.
Pyramids are part of complexes with tombs and chapels. These tombs were built for members of the royal family.
Pyramids in magnificent places such as Egypt, Teotihuacan, Chichen Itza or Tikal, still marvel scientists and tourists for what represented for its respective cultures. Many times, these pyramids were part of complexes with tombs and chapels. that belonged to the royal family. That was the case of the Great Pyramid of Cheops in Giza, Cairo, in Egypt. Or the Teotihuacan pyramid complex in Mexico. (About one hour North from Mexico City. Indeed, the main avenue that connects the Pyramid of the Sun, Moon, and Quetzalcoatl is called the Avenue of the Death, for the many tombs and sanctuaries it had.