单选题Apart from the urgent&nbs

问题补充：

单选题Apartfromtheurgentproblems_____________bywarsandconflicts,theUNhelpscountrieswithotherproblemssuchaslackofeducation,lackoffood,poverty,disastersanddisease.A.to causeB.having been causedC.causedD.having caused

答案：

C