I had been rather proud of myself when my friends and family got the ticket,whether it was for speeding,parking or stop sign violations  .It was something that happened to others. But last Friday I joined _ . I was asked to do a new project last week. On Friday morning on my way to work,I suddenly remembered that I had spent the past six weeks without considering that I had a week's vacation planned during that time. I was very disappointed with myself for not remembering it. The truth is that I was not paying enough attention to my driving and I did not come to a complete stop at the stop sign in front of a school. I was so distracted  that I didn't even notice I had a policeman on my tail with his lights flashing. Finally I looked in my mirror and caught on. The policeman was rude and took my papers. Fortunately,I had everything up to date and since I had never had a ticket before,there was nothing for him to do but write me a ticket. While I was sitting there in the seat of "shame",I felt bad. If I had been that distracted and a child had run onto the road,perhaps I would have not reacted as well as I could have. It was a wake-up call. People at work asked me if I tried to talk my way out of it. Frankly,it never occurred to me. I felt guilty. Now I no longer have a clean driving record. Please be careful out there,as a moment's distraction can lead to tragedy. From the experience,the writer has probably learnt   _  .
what is really important to her how to deal with policemen to enjoy the small things in life to be much more careful
Question: I had been rather proud of myself when my friends and family got the ticket,whether it was for speeding,parking or stop sign violations  .It was something that happened to others. But last Friday I joined _ . I was asked to do a new project last week. On Friday morning on my way to work,I suddenly remembered that I had spent the past six weeks without considering that I had a week's vacation planned during that time. I was very disappointed with myself for not remembering it. The truth is that I was not paying enough attention to my driving and I did not come to a complete stop at the stop sign in front of a school. I was so distracted  that I didn't even notice I had a policeman on my tail with his lights flashing. Finally I looked in my mirror and caught on. The policeman was rude and took my papers. Fortunately,I had everything up to date and since I had never had a ticket before,there was nothing for him to do but write me a ticket. While I was sitting there in the seat of "shame",I felt bad. If I had been that distracted and a child had run onto the road,perhaps I would have not reacted as well as I could have. It was a wake-up call. People at work asked me if I tried to talk my way out of it. Frankly,it never occurred to me. I felt guilty. Now I no longer have a clean driving record. Please be careful out there,as a moment's distraction can lead to tragedy. From the experience,the writer has probably learnt   _  .
A. what is really important to her
B. how to deal with policemen
C. to enjoy the small things in life
D. to be much more careful
Answer: