Answer:
Elliptical.
Explanation:
An elliptical galaxy is one type of galaxy that has, or tends to have, an ellipsoidal shape and a smooth featureless image. For example, the IC 1101, one of the largest galaxies in the observable universe, has that shape. As the exercise details, they are often found near the centers of rich clusters of galaxies and are believed to have been formed by devouring many smaller galaxies over the lifetime of the cluster.
