Possible answers:
[a]. stops and the girl begins to work some gears on the back wheel of the bike and undoes the bolt and let the tire go and peels the metal with an iron and snaps it off.;
[b]. then pans over to a young girl showing how to smile on the side.;
[c]. then cuts to the young blonde who is demonstrating various methods of straightening the tire and pointing to how it should be operated.;
[d]. changes from color then eventually to black and white as people are working on different bikes and doing different things as people around them help or just watch, and sometimes children are shown watching them fix the bikes.;Choose from options above and answer: What most naturally follows?

A young brunette girl is standing as she holds onto a bike tire and white words on the screen appear that read "bicycle clinic #1" and "alice griffith (double rock) june 25, 2011". the video
Answer:
[d].