Answer:
B)The aisles are approximately the same height as the nave.
Step-by-step explanation:
The Saint-Savin-Sur-Gartempe is a church (an Abbey to be precise) built in the Romanesque style (11th to 12th century), and because of that, it is small in comparison to the Gothic churches, and its aisles are narrow, sustained by columns and with the same height as the nave, to obtain a strong structure.