Question

Which best corrects the run-on sentence?

Auroras illuminate the northern horizon they have a greenish glow or sometimes a faint red one.



A.
Auroras illuminate the northern horizon. They have a greenish glow or sometimes a faint red one.


B.
Auroras illuminate. The northern horizon in a greenish glow and sometimes a faint red one.


C.
Auroras illuminate the northern horizon, a greenish glow or sometimes a faint red one.


D.
Auroras illuminate the northern horizon. With a greenish glow or sometimes a faint red one.

Answer 1

A looks correct.

Answer 2

Yep, that makes sense to me. :3