Its A. Solid Solution, I don't really know how to really describe why. But I just looked it up on google. Hope I helped.
Answer:
is has around 1/5 lyrics of water
Answer is D. as u can see in the first diagram there is 3 wavelengths however in the second diagram there is only 2 wavelengths
i think the answer is C but don't take my word for it
Help it stay clean and a heathy environment