很多解释：介词+名词；一些v+n，再强调后面名词，而不是那句话，如何理解呀！求大神

王壮实

Although some had accused Smith, the firm’s network manager, of negligence when the crucial data went missing, the CEO defused a situation that was quite tense with her public statement that the debacle was not Smith’s fault.

a situation that was quite tense with her public statement that the debacle was not Smith’s fault

a situation that was quite tense, by publicly stating that the debacle was not Smith’s fault

a situation, which was quite tense, by stating publicly that Smith was not responsible for the debacle

a quite tense situation with a public statement about the debacle not being Smith’s fault

a quite tense situation by publicly stating the debacle not to have been Smith’s fault

e选项state的宾语变为了debacle，但逻辑上应该是“声明一件事（此灾难不是Smith的错）”，而不是“声明一个东西（灾难）”。

求大神解释

王壮实

奥里给

王壮实

大神！

海登卒

请问B选项这个 comma的用法有人能解释一下吗
GMATClub上说是comma可以用来set off a modifier
但是好像第一次见到这么用