In Mossdeep city I think.....
The third gym leader in Pokemon Sapphire is Wattson and he is located in Mauville City.
In sapphire, the 5th gym leader is your dad, in that city after Oakdale.
If you mean Pokemon Sapphire, then it is in the house on the west part of the city with the fifth gym. You have to have defeated the gym leader first.
The 8th Gym Leader in Pokémon Sapphire can be found in Sootopolis City.
You can with AR.
It depends on the version. In Pokemon Ruby, Sapphire, and Emerald, the fifth gym leader is Norman. He specializes in using normal type Pokemon and he is your father. His Pokemon are 2 Vigoroth and 1 Slacking.
The 6th gym leader in Pokémon Sapphire is found at the Fortree Gym. The name of the gym leader here is Winona.
In the lavaridge town gym.
the fourth gym its a fire gym
mauville city gym leader wattson
The leader is Falnery, she uses fire type pokemon.
U can't