PART B: Which detail from the text best supports the answer to Part A?

A “‘We really are the only country that resorts regularly, and on a long-term basis, to this form of punitive confinement. Ironically, we spend very little time analyzing the effects of it.’” ( Paragraph 5)
B “Their work indicates that most of these prisoners suffer from severe psychological stress that begins when they're put in isolation and doesn't subside over time.” ( Paragraph 8)
C “Instead, she and others must rely on more basic findings about how stimulation and social interaction affect the brain, and infer the potential impacts of isolation from that.” ( Paragraph 11)
D “It's impossible to say how isolated prisoners fare as a whole fare compared to King, because there's no systematic collection of data on their well-being in the U. S. prison system.” ( Paragraph 16)