How is phylogeny related to classification?

Classifying organisms on the basis of descent from a common ancestor is called phylogenetic classification.

Explanation:

Phylogenetic classification system is based on the evolutionary ancestry. It is based on the evolution of life and shows the genetic relationships among organisms.  Classifying organisms on the basis of descent from a common ancestor is called phylogenetic classification.

answer; i believe the correct answer is (data); /// good luck

the answer is d. chordata