问题详情

When the author talks about the political dimensions of the investigative journalism he refers to____.
A．John Bunyan"s Pilgrim"s Progress and one of its characters "Muckrakers"
B．its function of cleaning the dirt off the floor in public places
C．its relentless exposures of political and social evils
D．its indispensable status to the well-being of society此题为多项选择题。请帮忙给出正确答案和分析，谢谢！