In composition, symmetry is primarily used to:

Symmetry in composition plays a crucial role in creating balance within an image. When elements within a photograph are arranged symmetrically, they create a sense of harmony and stability. This balanced arrangement can make the photograph feel more pleasing to the eye, as it often replicates the natural patterns found in our environment.

Using symmetry, photographers can lead the viewer's gaze through the composition in a structured way, often evoking feelings of calmness and order. This effect is particularly effective in architectural photography or portraits, where a centered subject can dominate the frame and draw attention.

While other options such as highlighting movement, increasing brightness, or enhancing color are important aspects of photography, they do not specifically relate to the role of symmetry in creating visual balance in a composition. Symmetry specifically refers to the arrangement and distribution of visual elements, which directly impacts the balance of the overall image.