Which of these architectural elements was used for the exterior supports on Romanesque buildings?

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Romanesque architecture utilized solid, massive walls and arches to create structurally sound buildings. Buttresses were prominent features of Romanesque architecture, providing external support for the thick walls and arches. Pendentives were used in Byzantine architecture, while flying buttresses and diaphragm buttresses were not commonly used until the Gothic period.

Which of These Architectural Elements Was Used for the Exterior