[单项选择]

Passage 1
For reasons yet to be fully understood, one out of ten human beings in the world is left-handed, and from one generation to the next, this ratio is roughly preserved. As we know, left-handedness cuts across socioeconomic, ethnic, and gender lines. Yet throughout history prominent figures in science—to say nothing of religion—have identified in left-handedness signs of viciousness or worse. In 1903, Italian physician Cesare Lombroso identified left-handedness as one of the degeneracy signs of the born criminals. Three years later, Dr. Wilhelm Fliess suggested that left-handedness was a reliable identification of homosexuality. And in 1937 British psychologist Cyril Burt declared left-handedness to be a mark of an ill-organized nervous system.
As demonstrated by all the "therapeutic" coercion that left-handed children were subjected to during the first half of the 20th century, these biases had more than just a theoretical impa
A. a boxer from the south
B. a politician from a southern state
C. a person with extraordinarily large hands
D. a left-handed person