The correct option is D Peppered moth
Artificial selection is carried out by animal and plant breeders to produce breeds and varieties, which have desirable characteristics. Darwin was most impressed by dog breeders and farmers, who produced different varieties of Brassica oleracea like cauliflower, cabbage, kohlrabi, brussels sprouts etc. Similarly, horse breeders also select horses of desirable characteristics by selective breeding. Peppered Moth was, however, a case of natural selection due to changes in the environment brought by the industrial revolution in Britain.