Read this excerpt from a blog.
Dog walkers are welcome at the county park. Kite flyers, sunbathers, fisherman, picnickers, and bikers are welcome, too. But not me. A newly posted sign at the entrance to the park states, “Skateboards prohibited.” More than a mile of paved surface runs through the park, yet skateboarders are prohibited. There are challenging hills and narrow passes, but I can’t access them on my board. I am a responsible citizen who wears safety pads, throws away my trash, and stays well within posted speed limits. I should be able to join the throngs of outdoor enthusiasts enjoying all that the park has to offer.
How does the writer of this blog promote change?
A.by defining key terms

B.by criticizing public policies

C.by describing support for a cause

D.by explaining researched facts