Clusters of galaxies can be rich or poor, regular or irregular. But one thing they all have in common is that, if all galaxies could be detected, the majority of galaxies would be
A) normal spirals.
B) ellipticals.
C) irregulars.
D) barred spirals.

Question

Quizplus · Accepted Answer

Elliptical galaxies are the most common type found in galaxy clusters, especially in the dense centers of these clusters. This is because the conditions in clusters, such as high galaxy densities and frequent interactions, favor the formation and preservation of elliptical galaxies over other types.

Clusters of Galaxies Can Be Rich or Poor, Regular or Irregular