Select the best version of the underlined part of the sentence. The first choice is the same as the original sentence. If you think the original sentence is best, choose the first answer. Children who aren't nurtured during infancy are more likely to develop attachment disorders, <u>which can cause persisting and severely problems</u> later in life.
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A
they can cause persistent and severe problem
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B
which can cause persisting and severely problems
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C
which can cause persistent and severe problems
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D
that can cause persisting and severe problem