C) Exploring The Pokémon Center
The Pokémon Center is the red roof building:
Interface:
1) Nurse: Heals your Pokémon.
2) PC: Manage the Pokémon, Check your mailbox, check the Pokédex and Hall of Fame.
3) Poké Mart: Buy and sell items.
4) Union Room: Interact Trainers directly.
5) Pokémon Wi-Fi Club: Trade or Battle using Nintendo WFC.
6) Global Terminal: Trade Pokémon around the world with Nintendo WFC.
7) Geonet: Used to register your location.
You can everytime tap the red X button on the touch screen to return to the overworld