Which of the following is not the phenomenon whereby polarized light can be produced from unpolarized light?
(a) Absorption (b) Reflection (c) Scattering (d) Diffraction.

Respuesta :

reflection is the answer
I've just done some checking on optics here. Light can be polarised by reflection. I think it's called Brewster's law. 
I think I'd have to go for d diffraction.