问题详情

School integration plans that involve busing between suburban and central-city areas have contributed, according to a recent study, to ______ any future need/or busing.
A．significant increases in housing integration, which, in turn, reduces
B．significant integration increases in housing, which, in turn, reduces
C．increases housing integration significantly, which, in turn, reduces
D．increases housing integration significantly, which, in turn, reduce请帮忙给出正确答案和分析，谢谢！