Evolution Is Central to Vertebrate Biology Because It Provides a Principle

Multiple Choice

Evolution is central to vertebrate biology because it provides a principle that organizes the diversity we see among living vertebrates. Also it helps to fit extinct forms into the context of living species. Classification, initially a process of attaching names to organisms, has become a method of understanding evolution. F. Harvey Pough, et al., Vertebrate Life, 7^th edition

A) Argument; conclusion: It provides a principle ... among living vertebrates.
B) Argument; conclusion: Classification ... a method for understanding evolution.
C) Nonargument.
D) Argument; conclusion: Evolution is central to vertebrate biology.
E) Argument; conclusion: It helps to fit ... the context of living species.