【单选题】His list, in descending order of importance, was: energy, water, food, environment, poverty,terrorism and war, disease, education, democracy, and population.(Para.4)
A.
His list contains ten items:energy, water, food, environment, poverty, terrorism and war, disease, education, democracy, and population. They are arranged in such a way that each item is more important than the one that follows it.
B.
The ten items on his list -- energy, water, food, environment, poverty, terrorism and war, disease, education, democracy, and population -- are gradually losing importance now.