单选题 According to the passage, all of the following will result from human competition EXCEPT ______.

【正确答案】 D
【答案解析】[考核题型] 细节题
[解析] A、B、C选项均在文中第五段中提及,C为countless new problems besiege modern societies同意转述。另外该题可以根据题干推出。