Darwin's Principle That All Animals' Nervous Systems Evolved from That

Multiple Choice

Darwin's principle that all animals' nervous systems evolved from that of a common ancestor predicted that:

A) all living things can in theory be traced back to the same ancient unknown ancestor.
B) over time, nervous systems have come to have increasingly more in common at the neural level.
C) functionally different structures in different species share common ancestral genes and mechanisms.
D) brain-behavior relationships have remained largely unchanged during the course of evolution.