People try to avoid public transportation delays by using their own cars, and this ______ creates further problems.

A．in return

B．in case

C．in addition

D．in turn

下列人类活动有利于可持续发展的是[ ]

A、砍伐森林、开垦草原，开发新的耕地

B、捕捉珍稀野生动物，进行人工饲养

C、积极围湖造田种粮，增产粮食

D、跨流域调水，改变水资源的地区分布不平衡状况