Verified Answer :

The answer is dark coloration.

Peppered
moth color variation is a good example of natural selection. In
natural selection, genotype variations that will increase the chance
of survival and reproduction of some organism are preserved and will
be inherited. The
whole population consists of both dark and light moths. But, natural
selection acts on individuals. Dark moths were selected by
natural selection because dark color increases their chance of
survival and reproduction. Dark color of moths helps them to camouflage into dark background.