The proximity of wealth and
of poverty in the downtown centers of many metropolises—there can be a luxury high rise on one block and a homeless encampment on the next—exemplifies the income inequality that has inspired grassroots political movements across the globe.
A.
of poverty in the downtown centers of many metropolises—there can be a luxury high rise on one block and a homeless encampment on the next—exemplifies : Of is not required. The sentence wants to mean proximity of wealth and poverty, not something of proximity of wealth and proximity of poverty.
B.
of poverty in the downtown centers of many metropolises—there can be a block with a luxury high rise and a homeless encampment on the next—
exemplify : SV error: The proximity exemplifies. Of is not required.
C. poverty in the downtown centers of many metropolises—there can be a luxury high rise on one block and a homeless encampment on the next—exemplifies : Correct.
D. poverty in the downtown centers of many metropolises—there can be a luxury high rise on one block and a homeless encampment on the next—
exemplify : SV error.
E. poverty in the downtown centers of many metropolises—there can be
a block with a luxury high rise and a homeless encampment on the next—exemplifies : Meaning error : The contrast is one block with high rise and another is encampment. Here this sentence means one block with the difference. So, C is a better expression.