What can we say about a polarizing filter with vertically aligned chemical molecules?

A.
It will allow vertically polarized light to pass through it.
B.
It will allow horizontally polarized light to pass through it.
C.
It will block unpolarized light.
D.
It will allow all light to pass through it unchanged.

When you see distant streetlights through smog, they look dimmer and redder than they do normally. but when you see the same streetlights through fog or falling snow, they look dimmer but not redder. use your knowledge of the interstellar medium to discuss the relative sizes of the particles in smog, fog, and snowstorms compared to the wavelength of light.