Final answer:
Selena Gomez started performing at a young age because of her family's influence in entertainment, specifically her mother's role as an amateur actress that inspired her to pursue show business.
Step-by-step explanation:
The question pertains to the early start of Selena Gomez and her siblings in their music career. Selena Gomez was named after the popular Tejano singer Selena Quintanilla-Perez and was motivated by her family's background in entertainment. Her mother was an amateur actress, which played a significant role in influencing Selena to enter show business at a young age.
Selena's early exposure to the entertainment industry through television shows like Barney and Friends and her roles in Disney productions provided her with the platform to showcase her talents, leading her to music where she began as a member of Selena Gomez and the Scene before launching a successful solo career.