In a transverse wave, the medium vibrates * A. lat right angles to the wave direction.
B. in the same direction as the wave,
C. in a direction opposite that of the wave.
D. at a 45 degree angle to the wave direction.

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.

a:

by the combination of an unlimited number of elements