答案解析：
C
A不正確，他們在討論一個處于昏迷中的人（從 coma 聽出來），而不是在爭論；B 不正確，兩位說話者中出現的 UP！并不是雙方在爭吵；C 正確，首先是整個對話環境出現了 coma，另一個是背景聲音中一直有“滴滴滴”的電波掃描聲音；D 不正確，并不是對方不遵守說話者的規則而導致這樣的情形，從“I love that sound, I must have you now”可以得知，這個與選項意思不符合。

聽力原文：

Phoebe: It's all my fault.
Monica: No, it's mine. Why did I 'woo-hoo'? I mean, what was I hoping would happen? That-that he'd turn round and say 'I love that sound, I must have you now'?
Phoebe: I just wish there was something we could do. (Bends down and talks to him) Hello. Hello, Coma Guy. GET UP, YOU GIRL SCOUT! UP! UP! UP!
Monica: Phoebe, what are you doing?
Phoebe: Maybe nobody's tried this.