A．They agreed to kill all the sick birds.
B．They agreed to report any breakout of bird flu.
C．They endorsed a bird flu-prevention "road map".
D．They agreed to carry out research in this field.
参考答案C
解析:What did the leaders do to fight against bird flu during the meeting of the Association of South East Asian Nations?
细节题。根据文章最后一段Bird flu featured prominently at the meeting of the Association of South East Asian Nations in Manila．Leaders endorsed a bird flu-prevention“road map”aimed at sharing best practices in the region可判断C为正确答案。