What do I do if I locked my keys in a Ford Focus?

I recently got a diesel truck and have been learning more about diesel exhaust fluid (DEF). I am curious about what exactly goes into the fluid to make it safe to use in vehicles. How is DEF made?

I need to renew my license soon, but I hate driving through LA traffic just to sit at the DMV. Is there any way I can just renew my California driver’s license online?

As a part of my lease agreement, my landlord has asked me to purchase renters insurance. I set everything up and have paid for my policy. As proof that I got insurance, my landlord is asking to see my declaration page. What is a declaration page in renters insurance?