What were the two major characteristics of Gothic architecture? a. Symmetrical design and windowless rooms b. Decreased height and the ribbed vault c. Outdoor gardens and elaborate gazebos d. Increased height and stained-glass windows

The two major characteristics of Gothic architecture are **d. Increased height and stained-glass windows**. Gothic architecture is known for its soaring structures and the use of large stained-glass windows that often depicted biblical stories and allowed for more light within the buildings.