该对话是关于画展里游客的不文明举止。 女士阻止男士时提到闪光灯(the flash)带来的困扰， 由此推论男士正用照相机照相， 因此选择 B 项。

【录音原文】
W: I'm terribly sorry, sir, but we can't allow you to do that here.
M: But why ever not? I've paid my money. Now just leave me alone.
W: I'm awfully sorry, but we simply can't allow it. You see, the flash disturbs other visitors and damages the coloring in our priceless antique paintings.
Q: What is the woman trying to stop the man doing?