C. Pointed arches.
All of the remaining attributes of the Gothic style of architecture are common among the buildings constructed in that style. Flying buttresses were used to provide support and stability to the high and narrow walls of Gothic structures, stained glass windows were used to fill in the empty spaces of the walls, and domes were used to create the tall and imposing spires of Gothic cathedrals and other buildings. While pointed arches were often used in the Gothic style, they were not a defining characteristic and were also used in other styles of architecture from different eras.