答案解析：
B
整個對話內容：男士不小心闖進女士的浴室（或者別的房間，反正女士是裸著身體的），于是女士開始對男士進行指責，而男士說女士衣服還沒穿好，依舊能看到她的某個地方（你懂得）。 因此，A 不正確，因為這和 family 無關；B 正確；C 不正確，沒有碰撞；D 不正確，one thing 是指后面的善意提醒。

聽力原文：

Rachel: That is IT! You just barge in here, you don't knock
Chandler: I'm sorry!
Rachel: You have no respect for anybody's privacy!
Chandler: Rachel, wait, wait.
Rachel: No, you wait! This is ridiculous!
Chandler: Can I just say one thing?
Rachel: What? What?!
Chandler: That's a relatively open weave and I can still see your... nipular areas.
Rachel: Oh!!
(She storms off)

聽力筆記：

That is it: 夠了，好了，注意此時Rachel的語氣，表達憤怒。
Barge in:闖入，干預。【例句】Don't barge in on our conversation. 在我們交談時別嘴。