When is somebody a true adult?

when they become the pokemon go kid

Legally, its 18. But maturity wise that's a whole different deal

30+ For anyone, that's when you have the common sense of an adult.

18 - That's when you can do the adult stuff like driving.

18

21. 18 is kinda like a young aldut.

I'm pretty sure it's 18

My brothr is 21 and he has to pay for bills and stuff now

It'll make sense if you study Health and Social Care at GCSE level

that makes no sense to me but ok

I study Health and Social Care for my GCSE's which part of it looks at life stages throughout your life. Adulthood begins at 19 years old, so when you turn 19, you enter that life stage.