D. It shows that it is always better to work with people you don't know well instead of your friends
Answer:
1) After seeing a video of Stewart's soapbox race, Vivian wants to help him
2) Stewart reluctantly agrees to allow Vivian to help maintain his racer
3)Vivian begins to build her own soapbox racer for the next race
4) Stewart is skeptical Vivian can building her own racer since he needed help to build his
5) Vivian has the best soapbox racer and wins first prize at the race
I believe it refers to swords.