What can you say if you strongly want your talk to be related to your audience and make them care about it?

A、“My dear audience, may I have your extra attention to what I’m going to say?”;
B、“My talk today concerns the very interest of every single person on this spot.”;
C、“There is a great idea in my talk that overshadows all the other ones I got in my life.”;
D、“I’m going to tell you my own experiences in hope that you may learn from them.”