Which description best fits an elliptical galaxy?

The best description of an elliptical galaxy is one that characterizes it as lacking spiral arms and having a rounded center region. Elliptical galaxies are typically smooth and featureless, and they come in various sizes and shapes, but they do not exhibit the structured, organized appearance found in spiral galaxies. The rounded center indicates a concentration of stars and often a lack of gas and dust, which is essential for forming new stars. This structure allows elliptical galaxies to appear more homogeneous compared to other galaxy types.

When comparing this with other descriptions, those that mention irregular shapes, spiral features, or bar-shaped structures do not accurately represent elliptical galaxies, which are defined by their smooth, ellipsoid shape and the absence of pronounced features like spiral arms or a central bar.