Which sentence is most clearly written?

C) While driving to work this morning, I passed a car accident at the corner of Elm and Juniper.

Explanation: the option C is the one that is written most clearly, because it gives the important information in a short, precise way, without the necessity of explaining irrelevant facts (like when he says he was running a little late), but even without those details, the phrase delivers the message. Also, this sentences demonstrate a correct use of grammar and punctuation.