Hubble's galaxy classification diagram (the "tuning fork").
A)relates galaxies according to their shapes, but not according to any evolutionary status
B)explains active galactic nuclei
C)suggests the existence of black holes
D)shows how galaxies evolve from one form to another

Question

Quizplus · Accepted Answer

The tuning fork diagram simply categorizes galaxies based on their shape, dividing them into ellipticals, spirals, and irregulars. It does not suggest any evolutionary status.

Hubble's Galaxy Classification Diagram (The "Tuning Fork")