Answer:
b .at the outer edge of the Galactic Disk
Explanation:
The sun is located  on the outeredge of the galaxy. So it has an orbit within our Milky Way galaxy that is also located arround the outer edge of the galactic disk, and goes around in about 30 million years.
In reallity, allong its trayectory, the sun  goes above and below the gallactic disk, but it stays in the outer edge of the galaxy, far away from the galactic bulge and the galactic center, but closer to it than the galactic halo.
