For Six Months After Pearl Harbor, Nearly Everything in the Pacific

Multiple Choice

For six months after Pearl Harbor, nearly everything in the Pacific went Japan's way. Britain's supposedly impregnable colony at Singapore fell easily. American naval garrisons in the Philippines and on Guam and Wake Islands were overwhelmed, and American and Filipino armies were forced to surrender at Bataan and Corregidor in the Philippines. Other Japanese forces steamed southward to menace Australia. Then the tide turned. (John M. Murrin, et. al., Liberty, Equality, Power: A History of the American People, 2nd ed.)
This passage exemplifies a(n) _____.

A) conditional statement
B) argument
C) unsupported assertion
D) explanation
E) report