Article continues below advertisementZac Efron finally made an appearance in the Dancing With the Stars ballroom to support his brother Dylan. However, the actor may not have done his research beforehand.Fans teased Zac on social media after he awkwardly asked his mom whether Dylan's scores were "good."The High School Musical alum was in the audience alongside his parents, with his younger sister, Olivia, seated on his lap.Article continues below advertisementSource: @juliannehough/XZac Efron sat in the audience of 'Dancing With the Stars.