"She is the most important person here."

Translation: Dia orang terpenting di sini.

[aine736172]

Do we not need yang here ..? Or is it optional too?

[WayangOrang]

'yang' is optional here.

[aine736172]

Thank you...sweet joy for Indonesian people posting answers to our questions...hurrah!

[donny309620]

Why "adalah" is not used in the Indonesian sentence? "She is..." -> "Dia adalah..."

[WayangOrang]

'adalah' is optional.
The Indonesian sentence doesn't need a verb.
You should check the forum.
There is a topic about that subject.