The correct answer is A. Be scattered.
When a strong beam of light is passed through a colloidal solution, the light will be scattered in all directions by the colloidal particles. This is because the colloidal particles are much larger than the wavelength of light. The scattering of light by colloidal particles is called Tyndall scattering.
Option B is incorrect because the light will not pass unchanged through the colloidal solution. The light will be scattered in all directions by the colloidal particles.
Option C is incorrect because the light will not be absorbed by the colloidal solution. The light will be scattered in all directions by the colloidal particles.
Option D is incorrect because the light will not be reflected by the colloidal solution. The light will be scattered in all directions by the colloidal particles.