单选题 (It can be argued) that the problems, even something (as fundamental as) the (ever-increased) world population, have been caused by (technological advance).

【正确答案】 C
【答案解析】改为ever-increasing 现在分词通常用来表示主动，而过去分词则表示被动。population与increase间是主动关系，所以应改为ever-increasing。