Which of the following is not a feature of an obelisk?
a. it has a pyramid on top
b. it serves as a monument to power wealth
c. it houses religious artifacts
d. it has four sides

The obelisk is a stone pillar of a four-legged cross section, usually tall, set as a monument or ornament. The top of the obelisk is in the shape of a pyramid, and since it is made of full stone, there is no interior, where artifacts could be placed. They are set up at the entrance to the temples, on graves. They come from the ancient world, they can be found in Egypt, but they also have their Greek version. According to mythology, obelisk related to the ancient Sun God Ra, represented as the primordial mound on which God was standing when he created the world.

The answer is: c.

a, both were musicians during the jazz age

the conditions that made the byzantine empire vulnerable to attacks by the muslin turks were the sack of constantinople by western crusaders, the conquests of the sultanate of rum, presence of rival kingdoms and finally the set up of fiefdoms at the empire which were owned by the ghazis (turkish warriors).