Classification into Kingdoms
The system of classification into biological kingdoms is one way that science has organized living beings by their kinship in the history of evolution. This means that all the species that integrated the five kingdoms have common ancestors, so they share part of their genetic information and belong to the same family tree.
All species that belong to a specific kingdom have similar characteristics regarding development and functioning, such as the number of cells that compose the organism in it and the way they obtain energy, within others.
Therefore, both statements are used in the classification into kingdoms, option C is correct.