In Part Because of His Scientific Accomplishments, at Least Dimly

Multiple Choice

In part because of his scientific accomplishments, at least dimly grasped by the public; in part because of his courageous positions on social issues; and in part because of his benign personality, Einstein was admired and revered throughout the world. (Carl Sagan, Broca's Brain)
This passage exemplifies a(n) _____.

A) illustration
B) explanation
C) unsupported assertion
D) argument
E) report