Artificial taxonomy is connected with the Use of habit and habitat of organisms; Based on the presence or absence of chemicals in cells or tissues; Based on morphological traits; Based on evolutionary history of a species

The system of classification given by Pliny and Elder was an artificial one. He divided the organisms on the basis of habit and habitat. Linnaeus' system of classification is also an artificial one. In this system of classification, only one or at most a few characters are considered and the organisms are classified into groups on the basis of these characters. So, the correct option is A.