单选题 ExxonMobil has spent Dollars 3.5bn on the clean-up, environmental ______ and compensation, voluntarily paying Dollars 300m to more than 11,000 affected Alaskans.

【正确答案】 B
【答案解析】rehabilitation复原；purity净化；defilement弄脏，污辱；affection影响，爱情。