I think it is D but I'm not sure, however, 4 seems pretty right.
All galaxies have a dense core of stars. Spiral galaxies, however, have arms that are often visible. There are two kinds of spiral galaxies: barred, where there appears to be a line running from arm to arm through the core, and <span>ordinary, where there is no bar. @Badbunnyhunny</span>
Answer:
1 ma /b/ correct answer 2 ma /a/ correct answer
