What is the primary material used in the construction of the Santa Sabina?

The Santa Sabina, an early Christian basilica located in Rome, was primarily constructed using brick and stone. This choice reflects the materials available and commonly used during the time of its construction in the 5th century. Brick provided strength and durability, while stone, particularly in the form of travertine and tuff, was also used for foundational and decorative elements.

Using these materials allowed for both a sturdy structure and the ability to create large open spaces, a hallmark of basilica architecture aimed at accommodating congregational worship. Additionally, this combination of materials is consistent with the Roman architectural tradition that influenced early Christian designs, making it a fitting choice for this church.

Other materials mentioned in the choices, such as marble and gold, although notable in later Christian architecture for decoration and in certain specific areas, do not constitute the primary building materials of the Santa Sabina. Steel and concrete, on the other hand, are modern materials that postdate the construction of Santa Sabina and do not apply to its original architectural context.