I think it can be C or D. But I think it's D.
The answer would have to be the third option "<span>Clusters and constellations." Clusters is a group of stars that is in a galaxy. Constellations is a line connected by stars to make a picture for example a kite. Galaxy's also include: planets, stars, clusters, comets, and sometimes asteroids.
Hope this helps!
</span>
Hypertonic, the extra water causes the cells to swell.
Every cell<span> in your body contains organelles (structures that have specific functions). Just like organs in the body, each </span>organelle<span> contributes in its own way to helping the cell function well as a whole. The </span>nucleus<span>, </span>mitochondria<span> and </span>chloroplasts<span> are all organelles.</span>
