Maybe I'm missing something, but it looks like that's question number 8; the answer key in the back of http://sites.apam.columbia.edu/courses/apph4903x/exam_GR0

Maybe I'm missing something, but it looks like that's question number 8; the answer key in the back of http://sites.apam.columbia.edu/courses/apph4903x/exam_GR0177.pdf http://sites.apam.columbia.edu/courses/apph4903x/exam_GR0177... says the answer to #8 is choice D.