<span>I believe the correct answer an arch.</span>
The resulting architectural form of dome, a rounded
vault forming the roof of a building or structure, is generated by rotating an
arch 360 degrees about a vertical central axis. Dome, in the modern world, is
usually found over religious buildings, legislative chambers, sports stadiums,
and a variety of functional structures.
B) False
A composition in art/design are multiple elements combined together for a purpose.
For music I think it is true.
"Musical composition, or simply composition, can refer to an original piece or work of music, either vocal or instrumental, the structure of a musical piece, or to the process of creating or writing a new piece of music. People who create new compositions are called composers."
Let me know if this was confusing or not.