Answer is: A) In smoggy areas, dark moths have a higher survival rate than white moths.
The light moths will be captured by predators more easily than the dark moths, and the population of dark moths will rise.
This is example of natural selection and adaptation.
Predators will easily capture white moths and their population will drope.
Moth populations can survive in a variety of different situations, because the environment is constantly changing and different alleles are favored.