What did the speaker admit regarding the accident?

The correct choice highlights the speaker's acknowledgment of their involvement in the accident, indicating personal responsibility for causing it. This admission suggests that the speaker has recognized their actions played a direct role in the event.

In scenarios involving accusations or confessions, the distinction between being a bystander (as in option A) and taking ownership (as in option B) is crucial. Moreover, option C implies an attempt to intervene positively, while option D suggests a lack of knowledge about the situation entirely. Each of these options portrays a different relationship to the accident, but option B stands out as it conveys a clear recognition of guilt or fault, which is a significant part of the dialogue and context regarding accountability in such situations.