Gothic architecture is best known for which of the following elements?

Gothic architecture is primarily characterized by its high ceilings and pointed arches, which are key elements that distinguish it from earlier architectural styles. The use of pointed arches allows for the redistribution of weight in a way that enables the construction of taller structures and larger windows, which is a hallmark of Gothic church design.

The high ceilings not only enhance the sense of verticality, pointing toward the heavens and creating an awe-inspiring interior space, but they also allowed for the inclusion of large stained glass windows that fill Gothic cathedrals with light and color. This dramatic use of space and light contributes to the overall spiritual atmosphere of Gothic churches, making them some of the most impressive architectural achievements of the medieval period.

In contrast, other architectural features like vaulted ceilings, while present in Gothic design, do not capture its essence as effectively as the combination of high ceilings and pointed arches. Rounded arches and flat roofs, associated more with Romanesque architecture, are not defining features of the Gothic style, which moves away from these simpler forms. Therefore, the combination of high ceilings and pointed arches is what truly defines Gothic architecture, highlighting its innovation and grandeur.