It's a milky way galaxy is the galaxy that?

is farthest from the sun.

has the most stars.

has the biggest stars.

contains our solar system.

(pl you! )

The Milky Way galaxy ...

-- Is farthest from the sun.
No.  The sun (and the whole solar system, including US)
is IN the Milky Way galaxy.

-- Has the most stars.
No.  It's a pretty big galaxy, but we can see others that are bigger.

-- Has the biggest stars.
No.  Every galaxy has the whole spread of sizes,
from dwarf stars top super giants.

-- Contains our solar system.
Yes !  That's it.  We live in the Milky Way galaxy.