The correct option is C Numerical taxonomy: Every character is given equal importance
Numerical taxonomy is the classification of organisms by a comparison of large numbers of observable characteristics.
Artificial system of classification included the classification done by early humans, Aristotle and Carl Linneaus.
Natural system of classification was given by Bentham and Hooker. They classified the Plant Kingdom broadly into cryptogams and phanerogams.
Phylogenetic system of classification was not given by Bentham and Hooker. It was given by Engler and Prantl, Hutchinson, Takhtajan.