Question

two types of spiral galaxies exist. a normal spiral galaxy is one kind. which phrase best describes the second type of spiral galaxy?
is football - shaped
is irregularly shaped
has arms that start close to the center
has a bar through the middle from which arms extend

Explanation:

Spiral galaxies have two main types: normal spiral and barred - spiral. Barred - spiral galaxies have a bar - shaped structure through the middle from which the spiral arms extend. The other descriptions do not pertain to the main types of spiral galaxies. A football - shaped galaxy is more like an elliptical galaxy, irregularly shaped is for irregular galaxies, and having arms starting close to the center is not the key characteristic of the second type of spiral galaxy.

Answer:

D. has a bar through the middle from which arms extend