The author’s biggest worry about using nuclear energy is that ______.

参考解析：

细节理解题。根据文章第一段最后三句“It’s not just a question of supply and price, or even of the disease caused by filthy air. The terrorist assault on the World Trade Center raises other scary scenarios: how much easier would it be to crack open the Trans-Alaska pipeline and how much deadlier would it be to bomb a nuclear plant than to attack a wind arm?”可知，这不仅仅是供应和价格的问题，甚至也不仅仅是污染空气导致的疾病。恐怖分子对世界贸易中心的袭击引发了其他可怕的情景：打开横贯阿拉斯加的输油管道会有多容易？轰炸一座核电站会比轰炸一座风力发电厂更加致命？由此可知，作者对于使用核能最大的担忧是，如果恐怖分子袭击核电站，那是致命的。故选B。