The Beating of Your Heart Results from Physiological Mechanisms Fundamentally

Multiple Choice

The beating of your heart results from physiological mechanisms fundamentally no different from those that underlie heart function in fishes, frogs, and birds. Likewise, the molecular events that produce an electrical nerve impulse in your brain are fundamentally the same as those that produce an impulse in the nerve of a squid or rat. For these reasons, animal physiology has made innumerable contributions to our understanding of human physiology. David Randall et al., Animal Physiology

A) Argument; conclusion: Likewise, the molecular events ... nerve of a squid or rat.
B) Nonargument.
C) Argument; conclusion: The beating of your heart ... frogs, and birds.
D) Argument; conclusion: The beating of your heart ... physiological mechanisms.
E) Argument; conclusion: Animal physiology ... human physiology.