Question

which type of galaxy has arms that contain sites of active star formation and start close to a bulge in the center?
elliptical
irregular
barred spiral
normal spiral

Explanation:

Both normal and barred spiral galaxies have arms with active star - formation sites close to the central bulge. Elliptical galaxies have little to no active star - formation, and irregular galaxies do not have a well - defined bulge and spiral structure like spiral galaxies.

Answer:

A. normal spiral, B. barred spiral