You are a person and you can make a difference by doing anything :)
Pacing is moving a story forward with a certain speed. So the correct answer should be slow. To slow a scene to the point of using a coma, add a lot of these. Since all of the sentences are relatively long with a lot of commas and all of that slows the tempo down.
War, I can sense they are getting ready to fight.
Answer:
"Each country competing in the games has at least one of the symbol's colors in its national flag."
Explanation:
This sentence shows that any country that competes will be symbolized in the Olympic rings by having each of their flag's colors represented in some way.