Final answer:
Jax, Scheana, and Ariana are cast members on the Bravo reality show 'Vanderpump Rules', which follows the lives of staff at Lisa Vanderpump's restaurant SUR.
Step-by-step explanation:
The Bravo reality show that features Jax, Scheana, and Ariana is Vanderpump Rules. This show is centered around the lives of the staff working at SUR, a restaurant owned by Lisa Vanderpump, who was originally featured on The Real Housewives of Beverly Hills.
Viewers follow the personal and professional lives of the cast, including the drama and relationships that unfold both behind the scenes and during service at the upscale eatery in West Hollywood.