GRE
Those who fear the influence of television deliberately_________ its persuasive power,hoping that they might keep knowledge of its potential to effect social change from being widely disseminated.
　　(A) promote
　　(B) underplay
　　(C) excuse
　　(D) laud
　　(E) suspect
为什么选B,不选A.“its” 代表的都是television吗?